First time doing this, and I really appreciate your slow, careful directions ;) I didn't have a block handy, so I used a small cushion. That felt good for my lower back which is often sore Is it necessary to have support that is very firm, or a certain height to lift the hips up?
Jacqueline I am so happy you found this practice helpful. I think that using the cushion is a great substitute for the block as long as it feels good and it sounds like it did. The intention for this particular bridge is to have your hips higher than your heart and head to help down regulate the nervous system, but other benefits include decompression of the lumbar spine and stretching the psoas. I think the height with a cushion should work well and you can always add a hard cover book if you need more height!