We’re well into the New Year and many of us have resolved to get fit in 2020 … but does the time we work out make a difference? In the latest episode of Weizmann in Focus, Dave Doneson discusses the research of Dr. Gad Asher, who studies the effects of our biological clocks on everything from fitness to jetlag to liver disease.

Find out Dr. Asher’s take on whether mornings or evenings are the best time to hit the gym. Please share the video with friends via email or social media.