Winded, in my legs?

[aicabsolut]

The biological explanation is lactic acid. As your muscles use carbohydrates they produce a waste product called lactic acid. Your body can clear it away, but when you are working harder and creating more lactic acid than you can get rid of your muscles start to feel sore and/or heavy.

Not so. http://www.cyclingnews.com/fitness.p...ctic_frederick

[Eden]

hmmm all very interesting, but that heavy feeling may still be related to lactic acid, but of course in conjuction with other things too. Hydration, nutrition and fitness all are factors in how fast you will tire.

"the accumulation of lactic acid during exercise can interfere with muscle contraction, nerve conduction and energy production, leading to acute fatigue. That’s one reason you tire during a training session. Yet lactic acid isn’t just a useless byproduct of energy metabolism — it is an important energy source."
from http://tkdtutor.com/11Training/LacticAcid.htm

It does seem to be universally agreed on that soreness after training is not caused by lactic acid, but by micro tears in your muscles.

more interesting information on lactic acid http://www.lagrange.org/articles/Y05...ticacid-rf.htm

[velogirl]

If dehydrated or glycogen deficient (ie you don't have enough glycogen in your muscles), your legs will feel empty.

Does this happen frequently ACG? At what point in your ride? How long have you been riding?

[BleeckerSt_Girl]

I felt suddenly "winded" in my legs going uphill as I began biking again when I was recovering from my really bad recent cold. The winded/exhausted leg feeling is now fading away as I feel a bit better and stronger each day. It's quite a dramatic feeling- very sudden, right in the main leg muscles.

[spokewench]

After I do a long and hard ride and I've had an hour or two to recover, rehydrate, etc., I will have a beer. I can immediately feel that beer in my quads like I'm winded in the legs. It is the weirdest thing