The heat is your friend! It improves muscle elasticity allowing you to stretch your muscles more effectively. Joint mobility is also improved as the heat makes synovial fluid in the joint less viscous so that it can move around and lubricate your joints more effectively. The heat also helps to improve your circulation bringing oxygen and nutrients to the tissues of the body and removing metabolic wastes (aka toxins). Your skin is the largest system in the body and it gets a great workout as you sweat all over. You will be warm and comfortable when lying on the floor for your final savasanah so you will be able to relax without feeling cold.