Too lazy for sports. How do you finally motivate yourself?

I was once slightly overweight and trained to be underweight, I hardly ate anything, but now I find it difficult to gain weight… I'm too lazy to train because I have ps4 at home.

Besides, I think so, it is of no use to me to train, because you have to weigh more to build muscle, so training is of no use to me except burn more calories, right?

Put on the cap and attach a piece of bacon or chips (or anything you like to eat) to a string and hang it on the cap. And then "run after".

Wow