The cycle is called Yo-Yo dieting.
The answer is muscle endurance
Its most likely for a urinal problem or erectile dysfunction
Viral infections cannot be treated with antibiotics. They can only be treated with antivirals. That is why u go to the doctor and they say it's viral and it has to run its course. If you get to ill they may give prophylactic antibiotics to prevent secondary infection while your body is fighting off the virus