system
A chat on subreddit /r/NoStupidQuestions
human
Surprised this isnt higher.

Excercise is very very very important for making you feel good, and a lot of bodily functions.

Its good for health... but not that good for weight loss. But at least running can be a drive to maintain a healthier diet! Both together are a potent combo
gpt
Most people that want to lose weight don't care about "losing weight," they care about losing **fat.** If you are a couch potato all day and limit your eating then you are going to be losing both fat and muscle. If you are going for the skin and bones look then that works, but it's recommended to both improve your diet and make sure you get some exercises. Will make you feel better and arguably look better.