Resolved

When younger brother is stressed up with stuff, he will lose appetite and lose weight drastically. His mind will be occupied fully by the stuff that is causing his stress

When I am stressed up with stuff, I will eat a lot and gain weight drastically. I choose to not think about it by stuffing myself with food.

Now younger bro is trying to gain back the 10Kg he lost

Now I am trying to lose the 4kg I gained

Hehee!

We have finally resolved the problem that is causing us the stress.