If you could only do one exercise for your thighs, what would it be?
I am on a limited program and cannot do three or four exercises per body part.
I recommend you do either the Hack Slide, 6 sets of 8 reps, twice a week or Sissy Squats 5x15 reps, again twice weekly.
The sissy squat works more of the total thigh than the hacks.
If you can, and remember, the sissy is done in three parts, the downward move thrusting the knees forward while leaning back, then the burlesque bump, thrusting the hips up and forward and then finally coming to the upward position, which is not to mean you come totally upright.
You should only come up three-quarters to keep the tension on the thighs.
Done properly, sissy squats will develop your thighs from your knees to high up on your thigh where the muscle inserts under your shorts instead of stopping at the hips like a regular squatter’s legs do.