Hang in there Tangol.
I am back from the 3 Peaks - they say its about 2000 cals per climb. We must have used more because we had SUCH bad weather - driving rain, mental winds, reduced viz, cold at the top. Ben Nevis was tough and we thought that would be the worst - oh how wrong we were. Scarfell was just walking in a swimmimg pool as after 15 mins our boots were full of water. We almost turned back 20 mins from the top coz we just couldn't fathom why we were decending UNTIL we heard voices ahead who told us they were coming away from the top. That spurred us on. We then got to Snowdon and the weather was just as bad and we were in wet kit. The wind, rain and cold was awfull. One of our party was looking so bad I almost called in the chopper. But with sugar, nuts and water, I managed to get some colour into him and we all got down together.
INSANITY prepared me for this physical challenge. I am so pleased that I did the course. I was not phased by the effort at all; I "dug deep". Mentally I was on top of it. I became the "motivator" for all the others, and I can honestly say I got the group down off Snowdon with my chipper spirit, mind games, motivational talk and humor.
I loved it. We had so little sleep. We had a great support team who drove and fed us. We drunk a fair bit at the small cottage and I cooked a masive chili. We completed the challenge in 28 hours (and a few minutes). Honestly I am not bothered about not doing it in 24 because the weather was against us and some of the group were not fit enough for the pace needed. We all made it back (injury free) and despite us 7 being the closest of friends since 1978 - we still managed to become closer after doing this together.