Faster wrote: OK, so I'm going to try the 5:2 eating plan. Most likely I'll be eating <900 calories on Mondays & Thursdays. I'm fairly athletic. On a Saturday, I can burn between 3000 and 5000 calories going cycling... which is chiefly why I put my fasting 2 days away from that day. Any comments on how 5:2 interacts with heavy exercise (I lift weights regularly too)? Weekly expenditure in cycling is for 80 miles (130 km).
There is a good exercise section on the home page. Many people exercise on their fast days. I would guess for you cycling would be OK, but perhaps not lifting. You sound like you have been exercising for awhile, but sometimes it can affect weight loss: 5-2-diet-chat-f6/topic6543.html