The Ten Suats a ride device, Mexico City (Photographer Unknown)
The Federal District government in Mexico City, as part of a campaign against obesity, is installing thirty motion-detector machines on which Metro riders can perform ten squats to get a free Metro or Metrobús ticket. This is going to be a boon for thin, young, healthy people who can still do squats. Last time I tried it took a couple of good samaritans to haul me back up again.