I did my cadaver dissection last year in medical school, and you’ll probably be a better cadaver than you think. The worst one to deal with in the class was in the tank next to ours. The cadaver was 102 years old at time of death without a scrap of fat anywhere. The muscles dried out and fell apart almost immediately on dissection, and started growing mold over the winter break. The lab manager had to keep removing portions of the cadaver to try to limit the spread of the mold until all that group was left with was a head in a bucket of formaldehyde. The head, neck, and brain were the last dissections we did, so it worked out okay-ish, but I will never forget the absurdity of them ending up like a Futurama president.