[danburbridge]

Another vote for deadlifting here. With a desk based day job and being a keen cyclist my posterior chain muscles were under-developed compared to my quads etc - deadlifting helped strengthen my glutes, hamstrings and lower back significantly and pretty much all of my back pain has gone.

I didn't use a coach, but did study a lot of videos on deadlift form and also videoed myself to check I was doing it properly.