Viscous Exercising

Today, as part of our conditioning we ran sprints on the track and in the pool. In the pool, we do a form of running called aqua-jogging. We put on a strap on our waists to help us float, and then we perform the same movement with our legs and arms as we would do on the track)   I noticed that I could run faster on the track than in the pool.  This is due to the difference in viscosity between air and water. Water has a higher viscosity than air, thus it is harder to move in water than in air.