Which combination includes only stimulants?

Which combination includes only stimulants?

• A. Creatine and caffeine
• B. Caffeine and citrus aurantium
• C. HMB and citrus aurantium
• D. Creatine and HMB

Answer: (B)

Stimulants are substances that increase central nervous system activity to boost energy, focus, or performance. Caffeine is a well-established stimulant, and citrus aurantium contains synephrine, another stimulant often included in stimulant blends. Pairing caffeine with citrus aurantium therefore yields a combination of two stimulants. Creatine and HMB are ergogenic aids that improve performance through energy systems or muscle protein balance but do not stimulate the CNS, so any combination involving them does not contain only stimulants. Thus the combination with only stimulants is caffeine together with citrus aurantium.

Stimulants are substances that increase central nervous system activity to boost energy, focus, or performance. Caffeine is a well-established stimulant, and citrus aurantium contains synephrine, another stimulant often included in stimulant blends. Pairing caffeine with citrus aurantium therefore yields a combination of two stimulants. Creatine and HMB are ergogenic aids that improve performance through energy systems or muscle protein balance but do not stimulate the CNS, so any combination involving them does not contain only stimulants. Thus the combination with only stimulants is caffeine together with citrus aurantium.