According to the studies,the people who workout in the morning are more benefited than who do it on any other time of the day. Before you start your workout make sure you have Pre-workout meal which is important as it gives you ample of energy for workout.Also warm-up is important as the body was in relaxed state for a long time.For back pain patients, avoid lifting heavy weights in the morning as the intra-discal pressure is high,which can worsen the condition.