One of the best alternatives to caffeine for an energy boost is green tea. Green tea contains L-theanine, an amino acid that can help promote relaxation and reduce stress levels while providing a natural energy boost. Another option is matcha powder, which contains high levels of caffeine but also has antioxidant properties that may help protect against cell damage.

Another alternative to caffeine is ginseng. Ginseng is a plant-based stimulant that has been used in traditional medicine for centuries to improve mental clarity and reduce fatigue. It's available in various forms, including capsules, tablets, and tea.

Protein shakes are another great option for an energy boost. While they may not be as effective as caffeine in providing a sustained energy release, protein can help increase muscle mass and support overall health. Look for a whey protein or casein protein powder that is low in added sugars and artificial ingredients.

Finally, consider trying adaptogenic herbs like ashwagandha or rhodiola. These plants have been used in traditional medicine to reduce stress and improve mental clarity. They may not provide an immediate energy boost, but they can help support overall well-being and promote a healthy lifestyle.