*living a monk lifestyle for ten days*
Vipassana retreats are pretty famous. The schedule for these ten days went as follows:
4am: wake up
4:30am - 6:30am: meditate
6:30am - 8am: breakfast & break
8am - 9am: meditate
9am - 11am: meditate
11am - 1pm: lunch & break
1pm - 2:30pm: meditate
2:30pm - 3:30pm: meditate
3:30pm - 5pm: meditate
5pm - 6pm: drink tea
6pm - 7pm: meditate
7pm - 8:30pm: meditation explainer
8:30pm - 9pm: meditate
In short, I meditated ~10 hours a day for ten days. What arose was nothing surprising. There weren't any extreme moments of enlightenment or perceptible changes in my mental abilities. I'm extremely confident nothing to date has affected me more — despite the only reason for booking this retreat being my desire to avoid booking two weeks of accommodation/travel in Asia (commitment issues, you know how it goes).