When you are in stress your body and mind are tense and your body and mind cannot concentrate or operate as it normally does, Resulting in many different downsides like not being able to exercise properly.
Ptosis is the noticeable upper eyelid droop. It is not a disease, and therefore does not cause anything symptomatic, and is not infectious or life threatening. It is mostly associated with aging, or excess skin. The most uncomfortable thing is the possible occlusion of the eyes field of vision (meaning it may cover your eye a little. It is easily correctable with surgery.