Every user has their own threshold for how long they can keep gaming without a break. With virtual reality headsets, breaks are especially important. Regular pauses can prevent you from getting headaches or feeling dizzy, cramped, or even dehydrated. While some people claim to prefer marathon, all-day, uninterrupted VR sessions, your best bet is to prioritize your health: take breaks when you need to, drink water frequently, and get up and stretch regularly.