Before fitness training, one must give importance to doing a warm-up or stretching exercises to prevent accidents or to enhance the output during the training. There are also some precautionary measures and tips to serve as guidelines when doing fitness exercises. Here are some of them.
1. To increase your flexibility and to avoid injuries, stretch before and after a workout.
2. Hold your stretching position for more than 60 seconds to increase flexibility.
3. When stretching, hold that position for several seconds, and then slowly relax.
4. Work slowly in increments instead of immediately proceeding to do the hardest exercise or position.
5. Make sure that you have stretched or warmed up all muscle groups. For some people, even if they have strong bodies, they tend to neglect the neck when working out of stretching. Stretching the neck muscles can be as simple as placing the palm of one’s hand against the front of the head and pushing it. Then, do the same to the sides and the back of the head.
6. Stretch regularly to continually increase your range of movements and your level of flexibility and strength.
7. Do not force yourself to do exercises that you are not yet capable of just because there are people who can do it. 
8. Learn to rest. Rest in between sets and stations to make sure that the body has enough time to recover its energy.