When you want to get stronger there are many options for you. You need to know what is safe, and what is unsafe. A safe method would be to play a sport or weight train to build muscle. You can weight training by going to a gym or finding other workouts online. An unsafe method would be to use an enhancement such as anabolic steroids. Steroids are not like getting whey protein or vitamins. Diet comes hand in hand with effective muscle training (german: Effektiver Muskelaufbau) and there are many experts on the net with ideas for you and plans to work out.