One of the problems with much of science is that it's often a quasi-sedentary profession. Apart from those lucky few who have to trek through muddy fields in Vietnam or scale icy cliffs in Antarctica, the rest of us mostly took the job because it was indoors and required no heavy lifting.
That said, scientists get a lot of exercise. Usually, this involves energetically jumping to conclusions—there is nothing quite like seeing two data points, fitting a straight line and yelling, “We understand this COMPLETELY.”
The newest craze among the more energetic set is aquatic: shark jumping. Science is undergoing a cultural change at the moment, thanks to the Open Science movement, an idea that I am broadly supportive of. But some of the latest goals and statements seem a little… unrealistic to me.