This question has been highly debated over the years. There really is no right or wrong, it’s totally a matter of personal opinion and what support you feel your body needs. Weight lifting belts are generally recommended to use when your exerting yourself and lifting weight that is testing your limits. Another view is that you should not only wear a weight belt when pushing heavy weight, but to also wear a belt when you are feeling fatigued, as injuries can occur when you are tired and complacent.