Equipment needed: Heavy dumbbell or kettlebell, chair or bench, sliders (allowing your feet to glide across the floor). This low-impact workout can be completed in apartments without disturbing your neighbors or is a nice way to reduce stress on your joints. The routine consists of two sections: each section has two circuits with 10 exercises (50 seconds on and 10 seconds rest) per circuit. The entire routine takes about 40 minutes to complete. But make sure to warm up and stretch on your own afterward.