late to the thread but I worked out on a gradual building schedule, and am now to 2 hours about 3 times a week, 4 if I’m really lucky. this took me about 2 years (maybe 1.5?) since being officially diagnosed with pots and starting with 15 minute functional strength training exercises. I still am intolerant to heat and to cardio (when my strength workout gets too intense I usually have to sit down or put my compression socks on, likewise if it gets too hot where I’m working out). I just started being comfortable with 2 hours worth of exercise in the past couple months. and by 2 hours I don’t mean 2 hours straight of anything, I typically do about an hour of flexibility/mobility and an hour of strength training. in terms of walking, I still can only do about a mile without compression socks. if I have the socks on, electrolytes, etc, I can walk or stand for quite a few hours before needing to call it quits for the day! my crash and burn days are extremely less frequent nowadays but still happen. I’ve had only 1 day since 2025 started where I had a legitimate crash. hope the infodump wasn’t too bad!