I've been very much a vacation diver for the last 8 years. Every trip, I come home resolved to start diving at home, but there's one big thing holding me back. I run unusually cold, and live in California.
From what I can tell most folks in my area go with a 7mm wetsuit. I can't really go up (I think) without going drysuit. The last time I dove in my area on Catalina Island in October, I wore the area's standard 7mm and started to shiver pretty violently underwater after half an hour. When I'm cold, my stressed out body also uses more air. On vacation I generally just let folks know in advance that I need 1 step up from the wetsuit everyone else needs, and it usually works out.
I've confirmed with my doc it's not a medical problem, I'm just naturally very thin and long. I can't afford to buy full gear right now, but strategic pieces to help me stay warm that cost less than $500 are possible.
I'm also open to building up more muscle mass, would that help? It wouldn't be instead of fat, its just easier for me to build bulk as muscle than fat.
Any suggestions for how a shaky stringbean woman can stay warm on cold water dives?