Louise!! Excellent questions!
1 - YES - the hamstrings are working hard on the reverse planks and it's normal to "feel" them working.
2 - YES - it is good to vary the position/distance of where you place your heels.
3 - Can you clarify the front thigh/knee question? Which specific exercises are you referring to?
Much love
Joey
Commented on Hi, I've just started the symulast pr...
06 Nov 10:00
Hi Maria!! And welcome :-) Yes - start with 2 lb weights and if/when they feel too easy - go up to your next weight. (What weights do you have??)