Dawn breaks, but does that mean you should break into a sweat? The morning vs. evening workout debate has long simmered, with advocates on each side professing that their way of working out is ...

In horizontal slices, a morning peak followed projected dawn, and an evening peak occurred around projected dusk. Changing the antecedent photoperiod affected the two peaks differently ...

Up for a challenge? If skies are clear, you may be able to complete a rare feat of visual athletics this coming weekend, and ...