I had chiseled abs. Trained Jiu-Jitsu 2 times per day 5 days per week as well as lifted weights, etc. My diet consisted heavily of fruits, veggies and lean meats. Nothing artificial. Only water, coffee, and an occasional pre-workout.
I lost my sense of smell and taste for ~6 months. Was in bed for 1 week, sleeping like 18 hours per day. Some foods still don't taste the same (mostly eggs and chicken).
This was about 2 days after I got the second dose of Moderna's vaccine.