There is likely quite a few reasons why you can not squat as deep as you'd like but I will focus on the most common reason - Mobility.
So what does mobility mean to you? I bet you're thinking somewhere along the lines of flexibility and that something is restricting you from dropping low enough - you are pretty much on the money!
Nine times out of ten the mobility that most people lack is in their ankles. A perfectly executed back squat will have the ankle in a straight line with the heel, knees in front of the toes and hips at a comfortable angle. But without going into too much detail and without confusing you, I'm going to give you 2 very simple tips to increase ankle mobility.
Ankle Pronation (rolling inward)
Alot of problems with relation to squat depth start at your feet, especially what is pictured above. When your ankles roll inward at certain phases during a squat, alot of different muscles then have to compensate for that weakness - resulting in poor performance and potentially injury.
Wrapping a resistance band around the inside of your ankle whilst doing bodyweight squats is going to encourage you to realign your heel and ankle. Either have a partner hold constant tension while squatting or if you are by yourself wrap the other end around a pole. Try 5 sets of 15 reps like this for each ankle.
Ankle Dorsiflexion (Knees behind toes)
A very common misconception is to always keep your knees behind your toes, this is so ridiculous that I'm not even going to explain why - you can google it. I mean seriously look at the pic!
Push your knees past your toes.
So by pushing your knees forward beyond your toes, you mechanically can descend ALOT deeper into your squat and you recruit ever so much more of your GLUTES. By activating your glutes your squat will become more powerful and glute activation carries over into numerous other exercises and benefits.
It must be said that these a very general tips and that it is very likely that you may have more than the above issues preventing you from getting a deeper squat.
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