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

"This is a great exercise to target your glutes and hamstrings while also using your abs and back muscles as stabilizers," said Bri Hardy, ACE, group exercise director at VillaSport Athletic Club and Spa Cinco Ranch. "The more you do, the higher your heart rate will go!"

• Stand with feet together. Take a controlled lunge (or large step) backward with your left foot.
• Lower your hips so your right thigh (front leg) becomes parallel to the floor and your right knee is positioned directly over your ankle. Keep your left knee bent at a 90-degree angle and pointing toward the floor. Your left heel should be lifted.
• Step your left foot in, and lunge back with your right foot.
• This counts as one rep.