to big meals or desserts, thinking the extra calories they've burned justify it," says Dr Laura Kruskall, a sports nutrition specialist at the University of Nevada, US. "Unless you do a long run, it doesn't." Despite evidence of carb intake boosting
your running performance. Cross-training has slowly crept into runners' lives over the last two decades. First we started doing it to stay in shape while sidelined with running injuries, or maybe to try a triathlon. Now we do it even when we
