I really like the most moderate form -- simply eat two meals a day, skipping either your first meal in the day or your last. Everyone 'fasts' for 8 - 12 hours

I really like the most moderate form -- simply eat two meals a day, skipping either your first meal in the day or your last. Everyone 'fasts' for 8 - 12 hours just by sleeping anyway, so simply skipping one meal nearest sleep means you fast for about 16h a day.