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Health & Fitness

WHAT IS THE BEST TIME TO WORKOUT?

Two studies published in Cell Metabolism journal confirm the impact of our sleep cycle on athletic performance.

Recently two studies that were published in the Cell Metabolism Journal have confirmed the influence that your sleep cycle has on your performance physically.

The study was directed by Paolo Sassone-Corsi, of UC Irvine’s Center for Epigenetics and Metabolism. He used mice on treadmills in order to observe the mechanisms of processes that metabolize sugar into energy in a process called glycosis and the oxidation of lipids in the first study.

morning workout

From the Department of Biomolecular Sciences at Rehovot, Israel Weizmann Institute of Science, Gad Asher, one of the co-authors of the studies, said, “It’s quite well known that almost every aspect of our physiology and metabolism is dictated by the circadian clock. This is true not only in humans but in every organism that is sensitive to light. We decided to ask whether there is a connection between the time of day and exercise performance.”

Sassone-Corsi and his team also found out that the hif-1⍺ protein is activated by physical activity in different ways according to the time of day. The protein is known to stimulate certain genes based on oxygen levels in tissue. He admitted that until now they were unaware that its levels fluctuate based on the time of day.

So what does this mean? What time is best to workout?

Professor Asher conducted a second study with mice on a treadmill at different times of the day followed by 12 people who were asked to do the same.

evening workout

The results claimed that oxygen levels in the cells were lower in both mice and human participants who exercised in the morning that those who worked-out in the evening. This meant greater efficiency and lower effort for those who worked out in the morning.

The scientist team said that the best time of day to work out seems to be contingent first and foremost on our own internal clock and thus may greatly vary from one individual to another.

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