I'd invent a blackberry-sized computer outfitted with opaque-adjustable goggles which contain your computer monitoring.
Almost every time I went jogging or hiking etc I wondered if I'd see the day I'd have a personal DAW and deal musically instead of the usual left-foot right-foot walking/hiking.
You'd think there would be less sun glare because again the monitors are opaquable.
It's been a long time since the Sony Walkman allowed us to bring our music wherever we go, and a workout-proof computer affords exercise-loving people computational productivity.
Hell, make it ALL in the goggles, streaming exercise workouts from the web.
Terrible fun. It'll happen