Despondent

People say exercise is great for depression, but how does one exercise when sleeping all day is pretty much all I do. 😴
Laundry, dishes and cooking happens but usually at the last minute and before my partner comes home. 😰
I am always so tired, and no motivation to do anything other that what absolutely required. 😲
Energy is always gone, everything is difficult, oh and I'm morbidly obese because when I stopped smoking I ate my feelings. 😖
Just wondering if anyone has any tricks or hints, hacks I you will... 😞