I enjoy sailing from an energy perspective. The sport is a great metaphor to the energy optimization.

Swimming in open water is a great thought catalyst. The challenge is equally physical and mental. I am member at the South End Rowing Club.

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Resources: https://serc.com/

I enjoy cycling as a mean of transport as well as a sport. I have recently put an emphasis on bikepacking.

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Resources: http://bestrides.org/

Trains are awesome! The carbon footprint of this mean of transportation is variable on the propulsion and distance. I'm a fan of the low rolling resistance, the power, the machine and the sound.

I rode the Amtrak cross the US multiple times. (Chicago-SF, Denver-SF, Albuquerque-LA) and across Europe.

I have been a member at the Golden Gate Live Steamers for many years. I have taught classes and organized the public rides on Sundays. But currently taking a pause.