Squat/sit - don't bend

[tshapiro]

This is a fundamental that is that ruins so many golf swings before they start. Let's look at why. Bending at the waist is physically easier - it takes less work from your legs to bend over and your body naturally avoids work.  The big problem is that you are out of balance by the time you reach the top of your backswing and worse... Your upper body weight is not over your legs which means a ground up swing is dead. Through your transition your weight needs to be firmly planted over your loaded legs so 1) you can linger in your transition in balance until your forward weight shift happens and 2) So that your lower legs are in a position of leverage to get your weight moving and to have enough spring to keep pushing until your weight has made it all the way to your left foot. 

So, if you don't love your swing check for this setup flaw. So, many people who swing over the top don't realize they had no chance way back from their setup. 

[boogielicious]

We have an excellent thread on this.

 

[iacas]

I don't agree with the idea of squatting, and I like the idea of bending/rounding.

Squatting would, IMO, make people be too upright with their torsos, and have knees that are too bent.

Plus, yeah, @tshapiro, check out the thread @boogielicious posted.