I dont know if this is a dumb question or not but hey am going to ask it anyway. I am just starting to lift again after being out the last few months with back problems so I am now trying to ensure my form is perfect on every lift.
When doing compound exercises, such as squats, when you have to engage your core do you tighten and flex your abs or do you try and tighten your inner core muscles (like you are taught in pilates)? As doing one seems to not do the other, if that makes sense.
Like i say this may seem a dumb question but I just want to avoid any further injuries to my back. I appreciate any responses.