I'm pretty new to weightlifting in general, but am getting the hang.
I did my first like heavy deadlift workout like 2 days ago and i think maybe i was doing something wrong. My lower back hurt like at the time and straight after, which made me question it as i thought u were only meant to get delayed pain rly. 2 days later and the pain feels like DOMS sort of but could well not be. its a relatively similar pain.
I mentioned it to a physio i know and she said its not meant to hurt like that, and its because your not using your "tummy muscles" :P properly.
I was like :S because i didnt know about this. can anyone give advice on form and how to use abs effectively?

thanks