Go back to the gym. Quit being fearful about Covid-19 if you're under 60 (which you likely are) and healthy (no autoimmune disorders and not diabetic) - the odd

Go back to the gym. Quit being fearful about Covid-19 if you're under 60 (which you likely are) and healthy (no autoimmune disorders and not diabetic) - the odds you will catch it are low and the odds it will kill or even damage you should you catch it are ridiculously low. As for the shin splints, quit running until your body heals. Take up rowing, recumbent cycling, elliptical machine or (my nemesis) the stairmaster. I favor swimming too but it doesn't do much for your legs unless you use fins and do kickboard work or have a helluva breastroke. The single lesson about exercise that a young man should learn after the age of about 22 is do not injure yourself. The reason is that you can no longer heal as you did when you were younger. This only gets worse after your mid-20s. Do not try strange exercises that your friends or gym buddies recommend or that you see someone else doing in the gym - be they unusually heavy weights, random martial arts moves, etc. and especially never ever do anything based on a dare. (Instead, if you must, practice them alone on your own terms at low speed, low weight, and low effort first). If you do injure yourself don't tough it out, take Advil. The usual dose is 200 mg twice a day but when injured (cracked bones) I've taken 800mg twice a day for weeks (I think 3200 mg/day is max, but at (2 X 800mg)/day I was feelin' no pain!) If you're planning an adventure where you'll be making unusual moves (e.g., hiking, distance swimming in open water, climbing.etc.) start taking Advil a day before you start and keep taking it until you return home. Finally, your next year's New Year's Resolution should be to quit making New Year's Resolutions.