I have often been asked what are the healthy requirements for my space trip. I have said that person with normal physical condition can fly to space without worries. G-forces are not that big and you do not need to do any physical effort. Virgin Galactic space doctor, James Vanderploeg, wrote an article to space.com about Virgin Galactic customers. In practice, almost all of them could make a space trip.

I have met Jim a couple of times. He is a nice man. I suggested that I would want to take a pull-up competition with my pilots before the flight. He thought that I would win the pilots, so that competition is not likely to be held.

http://www.space.com/28133-commercial-spaceflight-health-requirements.html