What Causes The Hamstring Curls That Feel In My Calves? With 5 Factors.

When you walk, do you ever sense a curling sensation in your calves?

The fact that it is one of the most unpleasant aspects of the hamstring curl machine is perhaps not surprising.

All of the muscles, with the exception of the hamstrings, appear to be receiving activation, stimulation, and effort.

The calves, in particular, appear to be the ones that are affected the most by the curls.

What Is Hamstring Curls

Hamstring curls are a strength training exercise that primarily targets the muscles of the hamstrings, which are located at the back of the thigh. The exercise involves bending the knee joint against resistance, activating the hamstring muscles to perform the movement. There are different variations of hamstring curls, and they can be performed using various types of equipment. Here are the two main types:

Seated or Lying Leg Curl Machine:

This is a common machine found in most gyms. You typically lie face down or sit upright, and the machine has a padded lever that you curl using your legs against resistance. The movement involves bending your knees, bringing your heels toward your buttocks.

Swiss Ball Hamstring Curl (or Stability Ball Hamstring Curl):

In this variation, you lie on your back with your heels on a stability ball. With your hips lifted, you engage your hamstrings to curl the ball toward your buttocks. This exercise not only targets the hamstrings but also engages the core and stabilizing muscles.

Here’s a basic step-by-step guide for the seated or lying leg curl machine:

  • Adjust the machine to your body size and choose an appropriate weight.
  • Lie face down on the machine or sit in an upright position, depending on the machine design.
  • Place your ankles under the padded lever or roller, just above the heels.
  • Grasp any handles or support provided by the machine for stability.
  • With a controlled motion, curl your legs by bending your knees and bringing your heels toward your buttocks.
  • Pause at the top of the movement, feeling the contraction in your hamstrings.
  • Slowly lower the weight back to the starting position.

It’s important to maintain proper form, control the movement, and avoid using momentum. Additionally, ensure that your feet are in a neutral position to target the hamstrings effectively and minimize involvement of other muscle groups.

Including hamstring curls in your workout routine can help strengthen the hamstrings, which is crucial for activities such as running, jumping, and everyday movements that involve knee flexion.

Benefits of Doing Hamstring Curls.

Incorporating hamstring curls into your workout routine can offer several benefits, as they specifically target the muscles of the hamstrings. Here are some advantages of including hamstring curls in your exercise program:

  1. Hamstring Strength:
    • The primary benefit is the development of hamstring strength. Hamstring curls isolate and target the muscles at the back of the thigh, helping to improve their strength and endurance.
  2. Muscle Balance:
    • Strengthening the hamstrings is important for achieving muscle balance in the lower body. Balanced muscle development between the quadriceps (front thigh muscles) and hamstrings contributes to joint stability and reduces the risk of injuries.
  3. Functional Movement:
    • Strong hamstrings are essential for various functional movements, such as running, jumping, and bending at the knee. By incorporating hamstring curls into your routine, you enhance your ability to perform these activities with greater efficiency.
  4. Injury Prevention:
    • Strengthening the hamstrings can play a role in preventing injuries, particularly in the knee and hip joints. Balanced muscle strength helps stabilize the joints, reducing the risk of strains, sprains, and other injuries.
  5. Improved Posture:
    • Well-developed hamstrings contribute to good posture by supporting the pelvis and maintaining alignment of the lower back. This can be particularly beneficial for individuals who spend long hours sitting or have jobs that involve sedentary activities.
  6. Athletic Performance:
    • Athletes, especially those involved in sports that require explosive movements, can benefit from hamstring curls. Strong hamstrings contribute to power generation, aiding in activities like sprinting, jumping, and quick directional changes.
  7. Prehabilitation and Rehabilitation:
    • Including hamstring curls in your workout routine can be part of a prehabilitation (preventing injuries) or rehabilitation (recovering from injuries) program. It can be beneficial for individuals with a history of hamstring injuries or those looking to strengthen and recover after injury.
  8. Variety in Training:
    • Hamstring curls provide a targeted exercise for the back of the thigh, adding variety to your training routine. This helps ensure comprehensive muscle development throughout the lower body.

When incorporating hamstring curls into your workout routine, it’s essential to use proper form, control the movement, and choose an appropriate weight to avoid injury. As with any exercise, it’s advisable to consult with a fitness professional or healthcare provider, especially if you have existing health conditions or concerns.

What Are The Reasons?

Feeling hamstring curls in your calves could be due to a few reasons, and it’s important to consider factors such as your form, muscle imbalances, and individual anatomy. Here are some possible explanations:

Form Issues:

Foot Position: If your toes are pointed or dorsiflexed (toes lifted toward your shins) during hamstring curls, you may be engaging your calves more than your hamstrings. Ensure that your foot position is neutral.

Ankle Mobility: Limited ankle mobility can also contribute to compensatory movements in the calves. Adequate ankle flexibility allows for proper engagement of the hamstrings.

Muscle Imbalances:

Weak Hamstrings: If your hamstrings are weaker compared to your calves, your body might recruit the calf muscles to assist in the movement. Strengthening your hamstrings through targeted exercises may help.

Overactive Calves: If your calves are overactive or tight, they may take over during exercises that primarily target the hamstrings. Regular stretching and massage for the calves might be beneficial.

Individual Anatomy:

Biomechanical Differences: Everyone’s anatomy is slightly different. It’s possible that your body mechanics lead to a greater recruitment of calf muscles during hamstring curls. Adjusting your foot position or trying alternative hamstring exercises might help.

Neuromuscular Connection:

Mind-Muscle Connection: Focus on establishing a strong mind-muscle connection with your hamstrings during the exercise. Concentrate on contracting the hamstrings rather than relying on surrounding muscle groups.

Equipment and Settings:

Machine Settings: If you are using a machine for hamstring curls, make sure the settings are appropriate for your body size and shape. Adjust the machine to ensure it aligns with your body mechanics.

If the issue persists, consider consulting with a fitness professional or physical therapist. They can assess your specific situation, observe your form, and provide personalized recommendations to address any underlying issues. Additionally, incorporating a variety of hamstring exercises and stretches into your routine may help improve overall muscle balance and reduce the likelihood of compensatory movements in the calves.

Use a Lighter Weight When Performing Hamstring Curls.

It is a well-known fact that regardless of the type of workout you are performing, if you use an excessive amount of weight, you will not often end up working the muscle that you are trying to work.

It is true, regardless of whether or not you like to acknowledge it.

However, whenever you load more weight than you are ordinarily able to carry, you typically end up using every muscle in your body, with the exception of the muscle that you actually want to use. This is something that we are all guilty of doing.

Hamstring curls are not a different, I assure you of that.

My own personal experience has taught me this.

In my experience, there is a significant gap between the amount of weight that my quadriceps are able to raise when performing a leg extension and the amount of weight that my hamstrings are able to pull when performing a hamstring curl.

You might get the impression that the quadriceps and hamstrings were balanced, but in my case (and I’m sure in the cases of many others as well), this is not the case at all.

In this situation, it is imperative that you “leave your ego at the door” and simply curl the amount of weight that your hamstrings are capable of supporting.

You will discover that whenever you decrease the weight, the hamstrings are worked to a much larger degree than they were previously.

Evidently, this indicates that the workout is performing its intended purpose, and your calves do not need to be concerned about anything.

Continue to Raise Your Legs Higher On The Pad.

Sadly, the only hamstring curl machine that I have access to at my gym is one that requires me to sit down.

When it comes to the operation of a hamstring curl machine, I have no understanding how either a standing or a laying machine works.

Having stated that, I believe that the same principles pertain to this situation.

Now, whenever I used the hamstring curl machine, I would always approach it with the back of my ankles resting against the pad (or the ball, or whatever you want to call it).

To put it simply, I presumed that this was the appropriate way to handle the situation.

On the other hand, this resulted in a particular problem, which I will discuss in the following section.

On the other hand, I was completely oblivious to it at the time.

Nevertheless, you want to experiment a little bit with the precise location of the point at which your legs make touch with the pad.

Surprisingly, it appears that the optimal site is somewhere about the middle of the calf.

It’s hard to believe.

Having your calf on the pad, on the other hand, will typically result in a significantly reduced activation of your calf muscles and a significantly increased stimulation of your hamstrings.

As You Perform Hamstring Curls, Make Sure to Flex Your Toes.

Now, as it happens, this is probably one of the most typical reasons why you feel hamstring curls in your calves. This is because of the movement of your hamstrings.

To put it plainly, the activity level of the muscles in the legs is directly related to the degree to which the toes are bent.

The backs of my ankles were resting against the pad of the hamstring curl machine when I spoke right above the point where I have been speaking.

When you use this technique, you will often discover that the toes bend out from the torso toward the outside.

To put it another way, your toes are located further away from your torso than do your heels.

This straightforward bending of the feet, and more specifically the toes, is what truly causes the calves to become active.

As far as I can tell, it’s pretty much the same as standing on your toes.

You are naturally stimulating the calves when you undertake this action.

According to the findings, the most effective method for activating the hamstrings is to flex the toes in the direction of the body.

In addition, it is also referred to as dorsiflexion in some circles.

It is important that the toes point in the direction of your body and head.

The hamstrings are automatically activated when you perform this action so.

Despite the fact that I would not recommend doing so for every activity, this is an effective method for activating the hamstrings while performing virtually any movement.

As I mentioned earlier, I would not recommend doing this for every single exercise; but, dorsiflexion will also work to activate the hamstrings more by performing all of the many versions of the deadlift.

Consequently, if you want to use your hamstrings more, you should point your toes upwards.

Enhance Strength of Hamstrings By Performing Other Exercises.

Okay, I’ve already mentioned the possibility of employing an excessive amount of weight.

On the other hand, it’s possible that this is simply a matter of your hamstrings being weak.

Obtain it from someone who is knowledgeable.

Over the course of my life, I have experienced a number of ailments to my lower back.

In most cases, this was due to a lack of strength in the hamstrings, glutes, and hip flexorial muscles.

Having said that, I am aware that I am not even close to being alone.

If you do not participate in a specific sport or if speed is of the utmost importance in your day-to-day life, the hamstrings are not exposed to a significant amount of activity.

As a matter of fact, I will go so far as to suggest that the majority of individuals only ever execute a few deadlifts and a couple of sets of hamstring curls, and that is the extent of their hamstring training.

I can attest to having been there, done that, and now I have the injuries!

That being said, I must admit that I find the hamstrings to be one of the most challenging muscles to train.

My hamstrings do not always “feel” as though they are working as they should, regardless of the workout that I do.

However, in recent years I have made a much more deliberate effort to train the hamstrings (along with my hip flexors and glutes). I have also been working on strengthening my glutes.

When you feel hamstring curls in your calves, this could be an indication that your hamstrings are not as strong as they should be.

In the previous sentence, I indicated that if you have loaded up too much weight, you can curl using any muscle other than your hamstrings but you can utilize any muscle.

In the event that your hamstrings are your main area of weakness, the same principle applies.

First, You Should Activate Hamstrings.

It’s possible that I’m the only one who experiences this, but I’ve noted that I frequently find that I don’t “feel” the hamstrings while I’m performing exercises that are specifically designed to target the hamstrings.

It is even true of the deadlift, which is considered to be the most effective exercise for building hamstrings.

Don’t get me wrong; the next day after a workout, I almost always get a soreness in my hammies.

Consequently, this indicates that the muscle that was being treated was being worked appropriately.

Nevertheless, it is not unusual to experience no “burn” when actually engaging in physical activity.

The most effective method for overcoming this challenge is to engage the hamstrings prior to beginning the curling motion.

Bodyweight single-leg hip thrusts and Jefferson curls are the exercises that I find to be the most effective in terms of their effectiveness.

Moreover, I am not going to lie; I have a genuine affection for hamstring curls performed with a Swiss ball.

To be fair, hip thrusts are primarily designed to target the glutes, whereas Jefferson curls are intended to build and lengthen the posterior chain.

On the other hand, from my perspective, each of these exercises is an excellent method to engage the hamstrings.

As soon as you have stimulated the hamstrings, you will have a far better chance of feeling them working against curls.


It is my hope that you now have a better understanding of the reason why you are experiencing hamstring curls in your calves.

Using an excessive amount of weight, failing to bend the toes, or improperly positioning the leg on the pad are the primary causes, as was seen in the previous sentence.

Furthermore, it is possible that the problem is simply a case of weak hamstrings or the requirement to activate the hammies prior to curling their muscles.

If, on the other hand, you are able to do these things correct, you will have significantly improved hamstring stimulation without putting strain on the calves.

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