I've been working hard over the winter to maintain my fitness, mainly running and rowing in the gym, and maintaining a strict stretching regime to improve flexibility for the coming season and fend of any niggling injuries. I've been getting out 4-5 times a month for a 2-3 hour ride, sometimes longer, but no more.
I'm now finding that my cardio-fitness seems pretty good, but i'm lacking in power to pick up the pace and feeling weak on long climbs.
Apart from the obvious just getting out there and riding, any suggestions on how to improve this quicker?
Specific exercises, diet, supplements?
Thanks in advance.