Im 19 yet i feel like an 80 year old man, im a relatively active person, i cycle an hour everyday, do pull ups, press ups daily. Yet my body feels so shit, im 19 surely i should be as fit as a fiddle. 

Some days ill wake up feeling great then some days ill just feel shit. I think if i try to rationalise it, and think that im dealing with 2 awful mental things on top of terrible sleeping, and to treat it like a physical illness, but idk im confused haha