Performing the bicep curl seems simple enough - you basically curl a weight towards you. The only problem is that it's very easy to cheat while you curl and not get the pump you need to get your bicep muscles to grow. Cheat biceps curls do have their place though. You can start your bicep workout with some heavy cheat curl sets where you use some body english to get the weight up and lower it slowly so you can take advantage of the negative and really get the blood flowing in the arms. You can also do some cheat curls after you've done as many reps with good form as possible during a set. You'll still need to do some biceps exercises with proper form to get a good burn in the muscle.