What is the best time of day to train? Most studies show that muscle strength, power and endurance are greatest between 4pm and 7pm. Muscle temperatures are generally highest at this time, which probably accounts for the difference. A study from Findland showed that daily variations in strength and power cease to exist in people who train in the morning. Researchers examined 27 males who weight trained either in the morning(7am to 9am) or in the afternoon(5pm to 7pm). Initially, all subjects were stronger in the afternoon than in the morning. But these differences disappeared in the morning training group, but not in the evening training group. Thus studied showed that you should train in the morning if you have a morning competition, because morning training will eliminate normal strength differences between early and late times of the day. (Journal Sports Science, published online)