Usually when looking for hotels, one of the first things I check is to see whether it has a fitness center and what restaurants are on site (and/or nearby). I pretty much, without fail, pick the one that has a nice, free fitness center, and some delicious food options.
Next time I go to Copenhagen (ok, first time I go to Copenhagen), I've got my hotel picked out: Crowne Plaza Copenhagen Towers. This hotel has brilliantly tied together two of my favorite things: eating and exercise.
The hotel itself is located in a green building and is attempting to become carbon neutral. One small way they're doing this is to use the energy of their guests. Spinning bicycles are set up with monitors - each guest who generates at least 10 watt hours of electricity gets a $40 meal voucher. According to the hotel's calculations, a guest cycling at 30km/hr (18 mph) will generate approximately 100 watt hours for one hour of exercise. That means just 6 minutes of cycling will get you a free meal voucher! Of course, for the slow folks like me (~14 mph), it'll take a bit longer. That's ok - I'm in it for the exercise as well as the free food!
Image Source: The Guardian