I was working out a lot during Covid, my gym was sneaky open, then 4 months ago I got tendinitis in my Achilles. If you haven't had it, you are lucky. I couldn't walk on it for a week, it is now almost 5 weeks later and it still doesn't feel right. Every person I talk to says stop doing gym workouts (a soft version of crossfit), I am getting too old (54 yrs old). My point, at our ages, know your limitations. I was trying to keep up with 35 yr olds.
During these 5 weeks, I have lost 25lbs of muscle. Looks great on the scale, but my upper body strength has disappeared. My PT doctor says to start riding a bike. I am now contemplating a Peloton or something similar. Do Cardio and push ups as my new workout. Only thing, I hate pedaling, but I might need to for cardio and ease on my body........ugh.
One other thing I have done thru this period, eat half as much for dinner.................