Some meditators are attracted to the concept of practicing for long hours at a time. They may be inspired by images of Buddhist practitioners, monks or nuns, who seem to meditate blissfully for hours without taking a break. Most people who sit for long periods have trained progressively over months and years. Especially for those who meditate on their own, intensive sitting requires a high degree of practice and discipline.
If you’re compelled to meditate intensively like these monks and nuns do, you must either connect with a qualified meditation teacher to ensure that you have the proper guidance, or join a structured meditation retreat run by competent guides