The one thing we do suggest is that you roll out one of the best yoga mats to protect your back and joints from the hard floor. Watch Sandy Sklar's 12-minute abs and core workout Once you familiarize ...

These exercises, such as pushups, squats, lunges and planks, are a great way to build muscle and lose weight, if that's your goal. The best part is no fancy equipment ... feet as wide as your hips.