I don't do a huge amount of exercise, so I'm not a hugely fit person. At my work on two occasions I've climbed a rather large structure, involving stairs, ladders, small doorways that you need to climb out of (I don't want to be more specific, as it might give indications of where I work) to a rather high point (50-70 m above the ground). I do have a reasonable amount of issues with heights, although for some reason I don't really seem to get triggered with that by doing this climb (the heavy work boots may be helping), but the rung ladders are not nice.

When I did this earlier this week I ended up with shaking legs. Not wobbly legs like you might get after too much exercise, but actually shaking legs (I remember getting that when I did indoor rock climbing one time as a teenager - they could see my legs shaking as my feet were resting on the wall, from the ground). After I've come back down, changed out of the boots, eaten, drunk water etc. both times I've felt completely and utterly wiped. Everything feels heavy. Even my head and I can't really concentrate/feel a bit disconnected. I feel like I need a nap. I don't manage to regain back much energy that day, either.

I'll be speaking to my OT about it this week (along with the rest of the list of things that I'm wondering about), but I was wondering whether anybody here had any thoughts on whether this is just an exercise-worn-out related thing or whether there is likely a sensory component in it. I've got not great proprioception and am hypersensitive on everything but visual (although I fall in the mild category).