One thing to keep in mind if this happens is weather your core is doing its work properly? Its your core that stabilizes most movements, and if your core doesn't do its work correctly the stress will show in the lower back.
It doesn't help much to contract your shallow, good looking, six pack. Its your deep core muscles that has to be activated, something that sometimes can be hard to figure out how to do. By watching my not so fancy video you get some good tips and tricks how to contract your deep core muscles and how not to do :)
An easy way to exercise the deep core muscles is to lay on the ground, bend your legs to 90 degree angle and start straightening the legs to the ground WITHOUT the lower back jumping of the flor at any point.
If this goes easy you can easily ad extra challange to the exercsise by adding wight on your legs or in your hands. One of my favourite exercises is this stick exercise. The first goal is just to get the stick behind your feet, if that goes well you can add a plate on the stick too :)
Another favourite is Plank. However the plank is also easily done wrong. Focus on turning your ribs down and turning your hips slightly forward (squeezing your glutes). Then start pulling your elbows to your feet or knees at the sime time as you pull your feet or knees towards your elbows. Your lowerback should be totally straight without any backextension at all. Sadly Instagram has made it popular to point your ass as much as possible to make the plank look sexy, but by holding the plank like that for a longer time you only stress your lower back in a bad way and doesnt fully engage your deep core muscles!
Try it out and see the differens, i promice you that you will feel the difference :)
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