Montag, 3. Februar 2014
140203 Spinning with Polar FT60
Apparently to train effectively you need to train at the correct heartbeat. I have known this for ages but never got round to buying a heart rate monitor.

But now I have treated myself to a Polar FT60 so can be sure I stay at the correct level and can keep a record of how fit I get at https://polarpersonaltrainer.com/

... comment