How do steriod's make you fitter?

Steroids, specifically anabolic steroids, enhance fitness by promoting muscle growth, increasing strength, and improving recovery times. They work by mimicking testosterone, which leads to greater protein synthesis and muscle hypertrophy. Additionally, steroids can enhance red blood cell production, improving oxygen delivery to muscles during exercise. However, their use comes with significant health risks and legal issues, making them a controversial choice for enhancing fitness.