Re: "Saddle", "Zero Gravity" or Ergonomic Office Chair Experiences?? Locations?? | Quote: | |  | | | Feels to me like without backrest there is better training for the upper body. No idea if this is true. To be honest, I have not used saddle with backrest, so only compare saddle w/o to normal office chair. | | | | | Did it strengthen you so that you can now sit up straight for a good while without getting tired or slouching?
|