she holds two Guinness World Records — one for the longest time spent in an abdominal plank position by a woman (four hours, 30 minutes, and 11 seconds) and one for the most push-ups in one hour ...

Bend elbows to lower chest down to the mat and hold the bottom position for 5 to 10 seconds. Press back up and repeat. If necessary, drop to your knees before pressing back up to repeat to make it ...