In reply to iamaclimber:
I'm a personal trainer and nutrition coach. Message me if you need any help or specific questions mate.
Basically, sort your diet out and eat clean foods. No fancy / fad diets. With regular training your body will settle at a 'set point' where it is happy. This is different for everybody.
Sitting at 10% body fat or below is quite difficult for some body types and takes some serious dieting. Personally, mine is around 12% and at that I weigh 100kg!
From there you can manipulate things and put protocols in place to drop body fat.
The majority of men sit at 12-15% and women 18-23% (I think).
Genetics play a part.
Personally I work with different athletes and body builders who want to get to around 5%. But this is very difficult and simply not necessary or optimal for climbers
Post edited at 21:28