How long should you hold in a vape hit?

Good day, I'm curious about the optimal duration for holding in a vape hit. I've heard various opinions on this matter, with some advocating for a quick inhale and exhale, while others swear by a longer hold. Could you please shed some light on the subject? What factors should one consider when determining the right duration? Additionally, are there any potential risks associated with holding in a vape hit for too long? Your insights would be greatly appreciated.