I have been a lazy bastard all my life, “arbeitsscheu” means shy of working. But as a privater I have been on outdoor activities all my life. A sunny day not being active outside in the lake or in the snow or the golden autumn sun or screening the first flowers at springtime was a torture for me.
Yes now for 16 month, even the hottest summer days I stay inside, becoming weaker and more and more tired.
But you as a young guy hanging in for a few months the lights are green to come back to your old self. Some guys like Damon or Andreas got muscles again. Another young guy I know better just cleared off from fatigue. The most persistent issue seems to be the sexual problems. You lucky one don’t have it.