Simple exercises such as push-ups, pull-ups, and sit-ups go a long way in building strength and muscular endurance. There are a lot of pull-up bars on the market, but this upper body workout bar from Iron Gym allows you to do much more. Sit-ups, push-ups, and dips are added to the functionality. It also has multiple grips so you can isolate different muscle groups. A great way to work your upper body without leaving the house.