When you have trained, your physical condition is worse than before you did (that is the reason why if a marathon runner did the marathon again, he would performance worse than the previous one).
So your body needs rest, food and time to recover.
If your training is too low, your body will recover quickly but it won’t get in better shape.
If your training has the correct intensity, your body will recover and will get in better shape.
If your training was too hard, it will take your body a lot of time to recover and it might suffer some injuries.
If you don’t rest enough between trainings, your body will never have time to recover totally and achieve a better physical condition. And every day it will get worse.
If you rest too much between trainings, your body will recover totally and its physical condition will get better, but afterwards it will decline again.
STAGES OF 1 TRAINING:
1. training = fitness loss (because of exhaustion)
2. resting = recovering the fitness loss and getting a better shape
3. resting more = decreasing fitness (because of sendentary life)
TRAIN + RECOVERY ENOUGH TO GET A BETTER SHAPE + TRAIN AGAIN BEFORE STARTING THE DECLINING STAGE. = MORE FITNESS
TRAIN + RECOVERY INSUFFICIENTLY + TRAIN AGAIN = LESS FITNESS
LOOK OVER THESE SOME GRAPHIC EXPLANATIONS AND EXEMPLES.
HOW CAN WE KNOW HOW MUCH TIME WE HAVE TO REST AFTER A TRAINING? (this is only a general idea, but every case is different. Ask your trainer!)
I AM NOT IMPROVING, COULD I BE OVER TRAINING?