You get sore muscles when you train, because you muscle strings rip and when they heal, your muscles grow. As far as I know. So why and how do they shrink?
In: 213
Complicated things take more energy to maintain than simple things do. If you’re building an elaborate sand castle on the beach, it will probably not fare as well when a wave hits it as a mound of sand would.
Muscle is more complicated than fat because it has to constantly do things: contract, relax, heal itself, etc. Fat basically just sits there being fat until your body tells it to either add more because you have a surplus of energy or release some because you have a deficit of energy. So having one pound of muscle on your body takes more energy to maintain than having one pound of fat.
In prehistoric times, humans often would go weeks or months without sufficient food. If you had a lot of muscle, you would find yourself starving much sooner than someone without a lot of muscle. So we ended up evolving so that our muscles degrade pretty quickly when they are not being used. If there is a famine, you can just sit around, your muscles will atrophy, and you will need less food to survive until times of plenty again.
Latest Answers