Sub-ohm refers to a type of vaping that uses coils with a resistance of less than one ohm. This low resistance allows for higher power output, resulting in increased vapor production and enhanced flavor. Sub-ohm devices typically require specific e-liquids, often with lower nicotine levels, to accommodate the larger clouds of vapor produced. In sub-ohm vaping, users often utilize advanced devices like box mods and sub-ohm tanks. These devices are designed to handle the higher wattage needed for sub-ohm coils. As a result, sub-ohm vaping is popular among experienced vapers seeking a more intense experience.