Hi there, creatine only gives a significant extra boost in short duration exercises lasting form 6 to 20 seconds this is because creatine is only specific to the ATP based energy system. Creatine will only make you able to work harder and longer within a given very short timeframe. It also true that creatine speeds up recovery which will enable you to work harder as you in the sense tah you can work out more often.
Here is a good article that explains the effects of Creatine in an easy to understand way. If you want to know more in depth on the subject of energy systems i suggest you go to wikipedia and look up something like the
ATP cycle or adenosine triphosphate
There's a lot of hype surrounding creatine and supplements in general, don't buy into it without investigating the facts
