Proponents of intermittent fasting say the clock can help you win the battle of the bulge. But the science behind it is a little more complicated.
What is the best strategy for running your best race? A new computer model might soon join your training team.
Celebrity fitness gurus tell us to turn up the heat in the gym to see immediate results. But the science of how we use energy in our bodies shows a long-term view is the best approach.