FIRE UP YOUR BLOOD
The theory behind altitude training is that in a low-oxygen environment, the body produces more red blood cells to transport oxygen. You have to be over 1,500m to benefit from low-oxygenated air – St Moritz in Switzerland (1,856m) and Font Romeu in France (1,850m) are ideal.
PLANNING YOUR SESSION
The benefits wear off after three weeks, so time your altitude camp for around two weeks before your race.