Now, I worry a bit about the TEDification of the world where style trumps substance, so hopefully you have a good blend of both!

Mucken Singh works VERY hard on his brawler's physique!

Hollywood Joohn Tatum? He does at least 6,000 sit ups and 10,000 pushups a day!

Anytime you see a constrained market, where consumption is limited to those who have special skills or are wealthy, that signals an opportunity for innovation.

If you invest the time to understand the customer better than they know themselves, if you know the things they want or need even if they can't articulate it, you can begin to develop a good sense as to where there really are unmet needs in the market.

You still want to be thoughtful about what you do, no doubt, but you have to learn through trial-and-error experimentation as well.

The reality is sometimes markets don't exist for very good reasons. It might be that there isn't a deep customer need. Or the economic model is just hard to pull off. Or maybe there is a regulatory barrier.