I would consider the following points in addressing this question:
A. Proper mobility and stability in the body: The needs of each joint of the body follow an alternation sequence as follows
If you do not possess proper mobility or stability at a given joint, this must be corrected with training or it will inevitably lead to injury.
B. Address imbalances and weaknesses: If the right side of the body does not match the left side at any joint or muscle, or if the front side of the body does not match the back side of the body (agonist/antagonist muscle pairings), this must be corrected with training. Additionally, if a given muscle or muscle group is weak, this must be addressed with training. The most common weaknesses are the posterior chain (low back, glutes and hamstrings), upper back, and core.
C. Perform proper warm-up before training: A proper warm-up will address the following:
Bryan Dermody, Powerlifter & Former Strength & Conditioning Coach