do i need to improve hamstring flexibility?

[simonsky]

good day Mark,

i can squat below parallel with no problems since i began SS so i believed that i dont need extra hamstring flexibility.

Some times i try front squats but cant seem to be upright enough even at heavy weights so i said to myself that this is because of my anthropometry.

although yesterday, i tried some goodmornings for the first time and i cant fucking get to parallel without me ending up in a half-squat position. this made me believe that my hamstrings are tight.

in your opinion, as long as i can get depth properly in the squat and proper starting position in the deadlift, which i can with a good back angle, do i still need to improve my shitty hamstring flexibility?

[Mark Rippetoe]

The fact that your goodmorning looks like shit does not necessarily mean that your hamstring flexibility is the problem. If your squat and deadlift are full ROM with good lumbar extension, your hamstrings are okay. You may just be doing the GM wrong.