Sounds about right. Question is does running help or hinder that?
Edit: or neither? Will definitely add those exercises into the rest I’m doing but still interested in whether running helps balance the negative aspects of riding a bike lots.
Definitely neither, running’s not particularly good for exercising the glutes. Better than sitting on a sofa, of course, but if you’re suffering from a bad back and stiff tendons running won’t help. I’d still say go for it, but then I prefer running to riding, and am also blessed with trails that start from my front door.
If you do decide to start running, I’ll add my voice to everyone else’s and remind you to start slowly, particularly the volume aspect. (A short fast run will do less damage than a long slow plod).
Whatever you decide to do, I’d start following a daily stretching program religiously, ideally with a bit of core + glute work too.