This is the exercise that you need to do if you want to get some assisting work in but don't have much time. You can not only cram in work for your forearms, biceps, and shoulders in a short amount of time, but it's also an extremely demanding lift that will get your heart rate up and make you feel like you got quite a bit of work done without spending all day at the gym.
This exercise will help to reduce the risk of a rotator cuff injury in overhead athletes and will help build mobility and strength through a full range of motion in the shoulder. The rotation of the trunk helps to add in more lower trap activation while still training the muscles of the rotator cuff and working through full external rotation. Try this as part of a shoulder injury prevention program for throwers or anyone else who needs to have a strong, stabile, and mobile shoulder!
The single leg squat is one of the most effective ways to increase leg strength, without adding load to the spine. This makes it a very safe and effective way to build up strength and power in the quads and glutes while keeping injury risks at a minimum. Try this variation, which allows for natural assistance, to ensure that you're getting proper depth on your single leg squats.