If you find it increasingly difficult to sit up straight, strengthen your core with a partial curl, says personal trainer Nadya Fairweather. This exercise is particularly good for working the ...

Lie on your back with your sit bones (that's Pilates for "butt") near the edge of the bed. Bring your legs up, knees bent, until your thighs are pointing toward the ceiling, lower legs parallel ...

Partial reps, also known as half or quarter ... Without moving your torso, hips, or legs, curl the weight up so that your forearms are parallel to the ground. With control, lower them back to ...