So I was at the gym today and performing Romanian Deadlifts for reps. Now I'm not very flexible, and my back was rounding at the bottom a little. I figured this was okay (I'm a noob what can I say), as long as my back stayed straight for most of the lift. A trainer comes to me and tells me not to round my lower back as much, by not going as deep. I told him I thought I was supposed to lift the bar all the way up from the floor, and he replied not if you round your back. So my question for the S&P community is what do I do? Do I continue going all the way down even if my back rounds a bit? Do I only go half way down to keep my back straight? Also, what stretches are good to make me for flexible so that I could go all the way down on the deadlift without rounding my back? Thank you.