Well, for me, the best way, is to do daily workouts, start a fit, and healthy diet, and have a FEW cheat days once in a while. I hope i helped :). Also, if you don't want to start a diet, you can just do a daily workout. a good suggestion would be an APP, but i know there are some in-app purchases, but an app that DOESN'T have in-app purchases are a Nike Fitness Club app, and all you need to do is just make an account, and you're ready to go. It gives you good ways to help you do a specific stretch.
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve.
Answer:
1.C 2. D
Explanation:
don't take my word for it