I'm a tennis freak, running freak, biking freak and weight lifting freak. Cardio 3 times a week, incluiding 5K running and 15k on stationary bike. Tennis twice a week (2 hours each session) and had a Plantar fasciitis injury recovered (8 months). Now, my achilles tendon hurts (like a needle on it): the doctod told me that I'm no longer a kid, so I have to slow down. Is that ok? I feel full of energy!!!! Wanna Rock!!