One horsepower equals 746 watts.
NASA rates the average long-term power output for a male adult exercising at a comfortable pace as 75 watts, or about 1/10 hp.
One hour of pedaling, treadling, or cranking equals 75 watt-hours.
The Human-Powered Home: Choosing Muscles Over Motors by Tamara Dean
Gabriola Island, BC, Canada: New Society Publishers, 2008
shows you how to use that power with plans and projects from converting an electric sewing machine to treadle power to generating electricity at home or on your bike. She introduces you to human power projects all around the world like Maya Pedal which makes a variety of bike and pedal powered equipment in concert with Boston's own Bikes Not Bombs. She shows you water pumps, agricultural cultivators, food processors, juicers, blenders, grinders, mills, lathes, saws, and washing machines that are all operated by human power.
There's a lot you can do with your own power, if only you use it.
Bike iPod charger
David Butcher's Pedal-Powered Prime Mover
Human power Trainer and Human Power Generator
Convergence Tech's Pedal-A-Watt
David Sowerwine and EcoSystems recumbent bicycle generator for Nepal
Comprehensive curriculum for using the generator in a classroom
Academic paper on three decades of work on human power and the Human-Powered Flywheel Motor
KickStart pump from Kenya
David Temple's push mowers and sweepers, wheelbarrows and carts
Man versus machine wooden bowl turning contest
Gandhi spun thread for khadi cloth an hour each day. It was an example of swadeshi, local production, and, for him, the heart of satyagraha. Muscle power is solar power. Employing these human power devices can be a solar swadeshi.