Whatever exercise you're doing, you must ensure proper form to avoid injuries.
It is very crucial to keep yourself fully hyderated after the workout.
Your body should be well-nutirioned. Follow diet chart suggested by the trainer.
Excessive of anything is bad and same applies here.
Post workout, it is necessary to stretch for flexibility and injury prevention.
Your body should get right amount of rest post-workout recovery and muscle repair.
Pay attention to their body's signals and avoid pushing through pain.