| Overtraining is a relative term. My 18 mile run last week still has me sore. I have an ultra-marathoner friend who runs 20 miles 2 times a week (her "short" runs) and 40 miles twice a month JUST FOR TRAINING. I don't think you're over-training, you just found your limits. Those will get better over time.
The process of increasing strength & endurance is called "super compensation". You stress your muscles and when they recover, they recover to a stronger state which then becomes the foundation or starting point for the next workout. This is why you get stronger & faster over time. Obviously some types of workouts, like intervals, stess more and therefore benefit you more (and faster). "That which does not kill us makes us stronger", right? Overtraining occurs when you overstress and do not allow sufficient time (or hydration or fuel) for your body to recover. This leads to muscle breakdown and various (not so nice) results).
There's also a mental aspect to training hard that cannot be discarded. I personally suffer from training burn out a lot. Sometimes I have to step back & remember that although I'm very competitive, I do not earn my living from Triathlon. I'm not super driven to workout intensely every day. One tug from wifey in the AM is all it takes to keep me in bed (most of the time). I have learned to "trick" myself into intense weekend workouts by cycle racing & training with a local club. It cuts the monoteny of super long solo weekend rides. I've forged a lot of friendships and learned a great deal about the longest & funnest part of Triathlon from the Virgin Islands Cycling Federation, of which I'm a member. Point is, this can really cut mental burnout. HTH.
__________________ Scott < is |