Dips. A classic standby for upper body chest, shoulder and triceps strength and conditioning. Use the Bulgarian Bag to add variation to your workout with this effective exercise. I've listed this as an advanced movement because, as commonly seen in your typical gym, few people understand how to perform the movement correctly as it requires increased focus to put the load on the correct muscles and joints. This movement performed incorrectly can wreak havoc on your shoulders and also creates the risk of your pectorals tearing away from your breastbone.  Ouch.   Therefore, first perfect your dips using just your body weight and progress to this muscle building variation.