Mountain Climbers – 3 sets x 20 reps, 10 sec rest
Starting Position: Begin in a high plank position with hands under shoulders and body in a straight line from head to heels.
Execution: Quickly drive one knee toward your chest, then switch legs, alternating in a running motion while keeping your hips low.
Muscles Worked: Core, shoulders, legs.
Form Tips: Keep your core engaged and avoid letting your hips rise too high.