@dpayton
Take some electrolytes half an hour before you go out and you should be able to run. I’m 78 and hadn’t been able to run for many years because of bad knees, Had my knee replaced and I can now run the full 1 mile I like to run every morning and afternoon. I always had to walk that distance, If I tried to run, I would fall. I’m not even fatigued or winded when I get done. I’ve been on ADT for eight years.

The electrolytes helped me build up my stamina, so I don’t even need them anymore, forgot them one day and was able to run the full distance., I continue to take them For extra energy. I use sugar-free liquid IV Which Costco sells at a pretty good price. Amazon wants the same price for half as much.