It depends on the time of year. Obviously, during GP, the times will be slower so you can do more with a little less recovery time as opposed to Comp Phase with faster times and more recovery. Some combo of 600/550/500/450 with emphasis on a strong (last 200/150) finish. We do core body everyday, changing slightly each day so as to strengthen the entire core over the course of the week. Remember, I have unusual circumstances because I can't get my athletes in the weight room after practice. I know, I know it's a shame but we have to adapt.