Yes, you MUST treat suicides and all other speed/agility drills AKA intervals in that manner due to the fact that your body will release more free radicals, porduced from the exercise (anaerobically) performed. These radicals will act like sharp razors, damagin every cell they touch which is the main source of muscle soreness and weakness you can feel for days afterwards. Whatz worse is that every cell the free radical touches decays and becomes another free radical perpetuating the cycle. This process is called lipid peroxidation. To combat this you should consume antioxidants, Co Q10, vit C, E, and selenium.