I personally try and do floor exercises such as sit ups so in case I feel faint I just lay flat again

A recumbent bike has been helpful for me but I can only do a little at a time. I don’t pass out though so I’m not sure how that’ll help. It’s working out in a recliner position so my heart rate doesn’t jump as high as it would upright.

Swimming is helpful also

Thanks yall! I'm gonna try these out next week!

I hate to be specific but I did DDP yoga with some success. I also slimmed up by substituting one to two meals a day with very high protein low fat meals or shakes. I would suggest not only these but also getting a smart watch with fall detection. Track your exercise and health through the watch. Walk with friends who are aware of your condition daily.

I have a bunch of physical therapy exercises and yoga poses I can do while lying on my back so my heart rate doesn’t get too high. Have you tried aquatic physical therapy? Being in the water makes a HUGE difference for me - my HR is sometimes like 155 bpm outside of the pool and goes down to like 110 bpm after a few minutes standing in the water. I go to an aquatic physical therapist but I’m sure you can find exercise you can do in any pool online

Stretching in general, especially my neck and back, seems to also serve the purpose of relaxing, exercising (super light), and remaining close to the floor.

Try Reformer Pilates. The majority of the routines involve you laying on your back on a platform. It’s the only exercise I have ever consistently done because I didn’t feel miserable and dizzy the whole time and after. Be sure to inform the instructor of your limitations or concerns and they should be able to give alterations if the position won’t work for you. I also take very slow walks. Walking will burn calories no matter how fast you do it - you just have to do it longer. I know it’s not flashy especially with the “fitness” culture we see on social media but it’s effective for longterm and there’s tons of medical journals about the benefits. If you’re willing to take the time, you can do it without your symptoms acting up too bad (assuming you’re already comfortable with walking.)

I like my rowing machine. No standing necessary and it's a full body workout plus cardio.