If you’re performing these from home without a rower, you can use alternatives, including sliders, a medicine ball, or even .

He explains that since muscles can only pull, the hip flexors—located at the front of the hip—work to raise the leg and knee toward the chest ... bent at 90 degrees. 2. Bring the medicine ball ...

Start standing, then squat down and place your hands on the floor. Jump your feet back into a push-up position, perform a ...

Russian twist Sit up straight with your knees bent ... bring your knee to meet your hands. Repeat on the same side for 10 reps, then switch legs. Tip: Hold a dumbbell or medicine ball for extra ...