Break a Sweat With 17 Quiet, Bodyweight Cardio Moves That Won't Annoy Your Neighbors

"This exercise is great for the hard-to-reach inner thigh and outside muscles of the leg," said Heidi Jones, a certified personal trainer at Performix House in New York City. It combines strength and mobility for a move that will work your muscles and get you sweating.

• Start with your feet directly under your hips.
• Step your right foot wide to the side, coming into a lunge with your left fingers touching your right foot. Your right knee shouldn't go beyond your right toes. Keep your chest lifted and your weight in your heels.
• Push into your right foot to return to standing, then lunge sideways to the left. This completes one rep.