Have only just set up Zwift with a Tacx Vortex smart trainer and I am stunned how hard it is to ride. I thought it best to start with the FTP short test to get Zwift working at my level but I could not complete it, by halfway I was utterly exhausted and had jelly legs.
OK I don’t often ride but I run 20 odd miles a week and don’t think I’m that unfit.
Am I doing something really stupid? I’ve read all the set up guides, calibrated the Tacx but it is just so tough?
Thanks for any help