I am very intrigued about this.

Where is this from? It looks like an 80's game.

They made a movie based on this. It's called "Safety Not Guaranteed" and it was OK given the premise.

pfft dude you can't travel back as your past self your brain is already in your head it would explode

or your past self switch places with your future self.

It's feeling bad after you eat because you ate too much vs feeling bad while you eat because you're forcing yourself to eat. Neither extreme is fun, I can promise you that.

The only upside is that others look at you and think you're healthy. I don't think eating more than your body wants is any easier than eating less.

Intermittent fasting is a good tool to help take in calories. Of course this assumes you're consuming mostly whole foods. If you eat a lot of higly processed food you can still ingest way too many calories, even with a small eating window

I don't know what valid means in this context, but everyone is fighting their own conflicting battles.

I think it's natural to desire easier problems in times of struggle, but to perceive others' struggles as preferable is a means of avoidance rather than confronting and adequately reconciling the root or core cause(s). 2¢

That makes no sense, there's more light during summer, you should get lighter not darker.