stretches??

[Velocivixen]

I love the yoga pose called "Childs pose". You can search for an online video. Provides a great stretch for the lower back.

[OakLeaf]

Trouble with child's pose is it bends the lower back in the same direction as cycling, so on its own it's no help at all for people who already have a flattened lumbar curve.

A more gentle low back stretch is downward facing dog. Some of my teacher's cues: weight on all four corners of the feet, raise up the metatarsal arches (by raising your 2nd through 4th toes if necessary), weight on the index mounds (i.e. second metacarpal head), grab the mat with your fingers, internally rotate the thighs and wrists, shoulderblades going down your back, and most importantly, visualize hanging from your sitbones and not reversing your low back curve. Also, if you go into down dog from plank, then you know your hands and feet are the right distance apart. That will very gently stretch your low back.

[Velocivixen]

@Oakleaf, that's helpful information. As I think of it I see what you mean (see you can definitely tell I'm a newby)!