Wasserlecks

C4 is not dangerous for most healthy adults when used as directed, and its core ingredients do improve workout performance. The real cautions are its caffeine content, artificial sweeteners, and the fact that it is not appropriate for kids and teens.

An occasional Celsius is unlikely to harm a healthy adult, but each can carries 200 mg of caffeine, the fat-burning marketing deserves skepticism, and the label itself says it is not for children, caffeine-sensitive people, or pregnant or nursing women.

An occasional Monster is not dangerous for most healthy adults. The real concerns are the 54 grams of sugar in a regular can, daily caffeine habits, teens, mixing with alcohol, and people with heart conditions.