I'm doing 24h breaks between 24h eating periods because I was slightly overweight. I lost 10lbs in less than 2 months without any additional restrictions or exercise. I noticed no side effects. It's also super easy to keep up esp. when compared with my previous attempt at restricting sugary snacks. 'When' is so much easier to manage than 'what'. If I feel hungry I just need to distract myself for few hours and it's fine.