I suppose it depends on the fitness level and amount of use. I have got to the stage now
Where my legs dont hurt much at all. But they get a work out everyday. The more you do the quicker you recover..lungs and heart aswell. The main thing to do is keep hydrated. Water is the key.. I didnt drink enough when I just had a bottle on the bike. Now I use a camelpak and get through roughly a litre an hour.
Me and brian shardlow after tonigts muddy run around pines.
And I agree about. Muscle mass and carbs. To begin with it was about getting rid of the bluber..now its about muscle mass and fitness. Ill let the last bit of bluber do its own thing. Was aiming for 18 stone but would be happy with a fit beefy 19 !