STARTING POSITION:
Stand straight, spread your feet at shoulder width apart and put your toes slightly out. Place your right ankle on your left knee.
MOVEMENT:
Bend the left knee and move your butt back, lowering your legs and rise your arms until your thighs and arms are parallel to the floor while you inhale. Focus on always having your weight on the entire soles of your foot. Hold the position during the required time and then do the exercise with the other leg.
TIPS: You should feel the stretch of the muscles but not pain.