The Ready State Virtual Mobility Coach is like having a virtual Kelly Starrett in your pocket.
I’ve always found that if my lower back starts to hurt, it’s because I’m not engaging my core enough. Remember to suck your belly button towards your spine and to contract everything that isn’t your pecs.
Also, make sure that you’re engaging your lats. Imagine someone trying to tickle your armpits. Close that area off through the use of your lats.