Fadi, do you see any problem (effecting weights training) doing those HIIT drills before or after weight sessions. We do similar suicide runs at football training and I always thought about doing more by myself for the edge of fitness on everyone else. I was worried that doing it on my weight training days is going to effect my size/strength goals. Ive heard cardio on weights days is a bad thing but high intensity cardio for short periods of time I wasn't sure.