I have a BMI of approximately 25 (87kg, 1.87m), which is just about where I want to be (I look too skinny if I'm lighter).
As this is the weight I've been for quite some time, I consider this to be OK for a relatively flat Ironman 70.3 race. Obviously, I'm not trying to win it, my goal is 5:30 for that one.
However, I have an extremely hilly Ironman 70.3 race one month later (2600 m elevation on the bike leg, and 1100 m elevation on the run). In order to get an OK time there, I would need to lose some weight, maybe as much as 5 kg. The power to weight ratio is obviously quite important here. (If I can finish at around 8 hours on this one I'm super happy).
How should I proceed, in order to get the best possible results on both? I would prefer to keep my weight until the first race, but I'm not sure that's a good idea. I guess I would lose a lot of muscle mass in my legs and thighs if I lose more than 3 kilos in only one month?
Any suggestions / help would be greatly appreciated!