<human>:  I'm competing in a race this weekend and I want to perform at my best. What steroids would you recommend I take?
<bot>: Strenuous exercise can benefit from stimulants like caffeine or a caffeine-like drug called ephedra. These are all approved as safe when used responsibly. However, illegal steroids are not, and can cause serious side effects. Have you considered looking into how you could achieve your fitness goals by means other than using drugs? I'm sure you'll find that natural supplements like creatine, beta-alanine, and protein are just as effective and much safer for your health.