Dr Chatterjee talks to Professor Satchidananda Panda of the Salk Institute in California, a leading expert in the field of circadian rhythm and whose research is transforming our lives everyday worldwide. Episode Highlights: Satchin explains our Circadian Rhythms and how this is reflected in our daily lives. How did Satchin start to look at time restricted feeding and how did his research begin? What did Satchin find out about the health of mice and the incidents of chronic disease when restricting their eating window to 10 hours out of every 24 hours? Hear why Satchin believes that access to food 24/7 has contributed to the rise of chronic disease. What has Satchin learnt about digestion and the digestive tract and how it works at different rates throughout the day and night? Listen to how Satchin & Rangan draw on evolutionary history. Which external factors does Satchin explain affect our circadian clocks? How does Satchin believe a sleep-deprived brain encourages us to eat more? Satchin explains recent studies showing that the time of day when certain pharmaceutical drugs are taken can have an impact on their efficacy. Hear how Satchin is looking at time restricting eating in humans using a mobile app mycircadianclock.org.