I for sure have experienced this. Happens fairly often, usually when Im lying in bed, close to falling asleep, or just waking up. My limbs will feel distorted, bigger than normal, or super sensitive, like I can feel individual parts of them, or the blood running through my veins, or I just feel like a giant that could step over a mountain in a single step.

Sometimes its mild, other times its quite unnerving and intense, but it never lasts longer than 20 mins or so. Was never able to explain it as a kid, so I didnt try. Now I know what it is.