No matter how fast you try to push the 'jump' button you just can't make it past the current screen.If this has ever happened to you,don't worry,you're not alone.Experts say that playing video games help improve memory,Maths skills and patience.However,you must play sensibly or you can have health problems.Sam Oliver,for example,a 14-year-old British boy,cold play video game for hours,but then he got Nintendo thumb.This happens when you make your thumb do the same action again and again like pressing a button on a games console.So when you sit in front of your computer screen ready to play your favorite game make sure you play it safe.