Cycling technique - pulling up on the pedal is not a good idea. Gluteus are the strongest and most powerful muscles able to push down to the pedals quite efficiently. Why on earth we should spend energy to pull the pedal up? More info on http://cyclefit.co.uk/journal/correct-pedalling-technique
It is not rare for cyclists to suffer from discomfort, soreness, pain, pins and needles in the buttock area. One reason for this is that saddle bears the 40%-50% of the rider's weight. Also, humans are unique and all different. All up to say that finding the optimal saddle often is not as performing a calculation, it is more similar to solve a complex equation with many variables. You can enjoy more on this field reading this fascinating article by Jon Iriberri.
Massimo Monticelli, osteopath intrigued by manual therapies with passion for cycling, biomechanics and bike fitting.