Here is a short clip from the article: "Experts say interval training, alternating bursts of intensity activity with less intense periods, can burn more calories, boost stamina, and stave off that burning pain that stops any workout dead in its tracks. Interval training reduces training time, and the less time you have to commit to exercising, the more likely you are to stay exercising. It reduces boredom and increases variety and challenge"
Here is a short clip from this one: "Researchers are giving scientific support to a view that Whitmore vouches for from experience: that milk may be just as good or even better than sports drinks for serious athletes recovering from exercise. The health benefits of milk — which has carbohydrates, electrolytes, calcium and vitamin D — have long been established. But for athletes, milk also contains the two proteins best for rebuilding muscles: casein and whey. Muscles get damaged after an intense bout of aerobic exercise like running, playing football, or cycling. The casein and whey proteins in milk are precisely what the body needs to regenerate muscles fast."