John Ratey Twitterissä: ""New school of thought: In-class physical exercise won't disrupt learning, teaching" via @ScienceDaily https://t.co/zHjcBN44QM https://t.co/tHdxMMSPz2" / Twitter
Kuntopyörä Tunturi Cardio Fit E30 Ergometer, max.110kg | Netrauta.fi