This simple tip which I have mentioned before deserves it again. Most every rider has a weakness in all 3 riding disciplines. Time trialing, sprinting or climbing. You all have been in the position of being the last rider to get to the top of a climb at one time or another, only to be gapped when that heart of yours at between 150-180 bpms says please stop. And of course catching back up to the group at this point is nearly impossible.