Which of the following oils has a stimulating effect on the nervous system?

Lemon essential oil is known for its invigorating and uplifting properties, making it a popular choice for stimulating the nervous system. Rich in components such as limonene, lemon oil has a refreshing scent that can enhance mood, increase alertness, and provide mental clarity. Its ability to energize the mind and body makes it particularly effective in promoting focus and alleviating mental fatigue. This stimulating effect can be beneficial during periods of low energy or mild anxiety, supporting a sense of vitality and enthusiasm.

In contrast, other essential oils listed have different effects. Lavender is commonly recognized for its calming and sedative properties, promoting relaxation and helping with sleep. Ylang Ylang is often used for its balancing effects, which can be grounding rather than stimulating, while Melissa (lemon balm) is primarily known for its soothing and calming capabilities that can help reduce stress and promote a sense of tranquility. Therefore, lemon stands out as the oil that specifically stimulates the nervous system among the options provided.