From zero gravity to Ride & Tie: the quirky hobbies of the tech elite

For Silicon Valley's successful tech entrepreneurs the world is a playground of creative ways to unwind, and even boost productivity

Long hours, high stress and overwhelming pressure to succeed: the work culture of Silicon Valley is notoriously unforgiving, so it's not surprising that tech entrepreneurs find creative ways to blow off steam in their spare time.

Google co-founder Sergey Brin, for example, spends time learning flying trapeze, while former Twitter CEO Dick Costolo is an avid beekeeper. From DIY rocketry and zero-gravity flight through to sonic meditation, many tech execs need more than yoga to claim their "me" time, and say it helps them feel more fulfilled, relaxed and productive at work. But it's also a revealing insight into what makes them tick. Here, in their own words, eight entrepreneurs explain their favorite extracurricular activity.