Originally Posted by r2473
The only exception is doing HIIT barefoot (preferably after fasting for a minimum of 30 days). That is a good idea.
You don't need to run a lot of miles unless you love doing so. Seems that you can get the health (though perhaps not the competitive fitness) benefits from walking the same amount of time that you'd spend jogging.
For tennis, I say sprint (barefoot after fasting for 30 days) rather than jog. Jogging is boring!