Working out and being disciplined is a good thing, but overdoing it is not!
Many people at the beginning of fitness, do not master the rhythm, but blindly increase the amount of training, regardless of whether the body can adapt. Fitness training needs to be gradual, if you use the fitness God’s plan at the beginning, then the end of the injury will only be yourself.

Some people usually do not exercise, in order to make up for the weekend, so crazy exercise, stay in the gym for most of the day. And such behavior will only bury safety risks for health.
The news of fitness accidents is not uncommon, some people in the process of running sudden death, some people in the process of lifting iron pressure broke their legs, these are very regrettable.
When you overtrain, mental focus gradually declines and training efficiency plummets. After training, you will find that the muscle aches and pains, affecting your usual work and life, and more seriously, it is easy to appear myolysis, which is life threatening.

It is not advisable to exercise too much. Exercise is for health, not for harm. There are several signs that you may be overtraining:
1, after fitness training, the body muscle pain for a few days did not recover, and the normal training rhythm, muscle recovery 2-3 days to recover.
2, the quality of sleep after training did not improve, but insomnia, which may be caused by overstimulation of the brain nerve and excessive secretion of stress hormones.
3, after fitness training, showing a phenomenon of listlessness, after rest, did not feel energetic.
4, after training feel irregular heart rate, chest tightness nausea, loss of appetite, do not want to eat, if serious will feel nauseous want to vomit.
5, after training for a long time to feel weak limbs, even standing and walking are very difficult,
If you usually train, these signs appear, you must be alert, stop training, readjust the training plan, can not be stubborn, blind training.

Regular fitness should be gradual, not assault training. At least 3 times a week to ensure training, each time not less than half an hour, but not more than 2 hours.
Novice fitness, do not blindly pursue large weight training, or customize 1 hour running training goals, you need to start with small weight, the pursuit of action standards as the main point. Running training should also be segmented, feel the sound of the body, once the heart rate is uneven, breathing disorders, you have to stop to rest, and then see whether you can continue training according to the situation.

If you are too busy at work to go to the gym, you can use small time exercise, such as: at home for half an hour, weight training or dumbbell training, so as to ensure the frequency of exercise, maintain or improve the physical quality and muscle endurance at home.