Medically reviewed by Karina Tolentino, RD Key Takeaways Pre-workout supplements often contain caffeine and amino acids to boost energy before exercise.Caffeine in pre-workout can increase alertness ...
Trista Chan is a registered dietitian and hormone health expert with experience supporting the health of people navigating hormonal and metabolic challenges. Creatine supports short bursts of strength ...
Leigh Weddle, PharmD, is a licensed pharmacist with over 10 years of experience in retail and clinical settings. Pre-workout supplements combine various amino acids and stimulants to help boost energy ...