Lower back hurts after rocking table

While doing rocking table, my lower back hurts.

It's fine for like ten reps but pain gradually accumulates. I feel slightly uneasy next day.

First I thought it is spinal erectors. but it feels more like bone, not muscle. 

Want to know why.....

You're letting it go into your lower back.

- Use your glutes - posterior pelvic tilt

- Use your chest - push your chest up

Stop immediately when you feel the pain, don't keep going, it can turn into a long term lower back irritation. 

Cole Dano said:

You're letting it go into your lower back.

 

- Use your glutes - posterior pelvic tilt

- Use your chest - push your chest up

 

Stop immediately when you feel the pain, don't keep going, it can turn into a long term lower back irritation. 

Oh it was PPT. I thought it is APT. It's hard to tell from video. Thanks.