A woman does sit up crunches on a hard gym floor.
A girl does a twisting sit up while on a gym floor.
A girl is doing sit ups to include crossing her elbow over to the opposite knee before going back down.
A girl is in a room on the floor doing sit ups.
A young woman laying in the floor doing a special kind of sit ups for a workout routine.
A girl with blonde hair is at the gym doing some elbow crunches.
a woman in a gym doing sit ups while music is playing in the background.
On a gym floor, a young girl is doing sit ups with her legs bent at the knees.
a woman doing a variation of a sit up while on the floor
A young woman is doing exercises by performing several sit ups with a twist.