- Maybe. There are no absolute answers here, because we are working with a human body. Each one is a bit different and there is no guarantee that a solution for one will be a solution for all.
- What I can say is that I and many others still have comfort issues inside in a rigid trainer, even when we are well fitted on a good saddle and have no issues outside. My theory is the static nature of rigid trainers leads to unnatural loading on the sit bones and soft tissue. That realization is what lead me down the road of making, using and recommending rocker plates.
- more info about them here if you want to see what they are and how they work.
- Rocker Plates for Trainers
- Even with all the tricks and proper setup, I still stand regularly when inside. I do it at least as often as I do when riding outside, if not more. The breaks are still helpful since there are still minor differences compared to outside.
- this thread has a broader range of discussion and options for pain and numbness
- FAQ: Saddle Pain, Soreness, Numbness on the Trainer