squats:45 degree or all the way down.

[d-dub]

I go as deep as possible without loosing the arch in my back. If I truly go down as far as possible, the arch starts to flatten out, and I think this is dangerous (I'm talking at about 4-5 inches from the floor.) In general, I go well below parallel, usually to wear my hams just start to touch the top of my calves.

what he said.

I go as low as possible without losing my arch. Its just a matter of stretching your hams calves and hip flexors (for a start) and your depth will improve as your flexibility does.

 

[The Angry Mule]

All the way down bro