I'm looking to increase range of motion, primarily for certain lifts (e.g. back and front squat), for acro yoga (e.g. hamstrings), and general flexibility (e.g. for yoga).
I've done some research into stretching and it appears that PNF is the most effective form of stretching for increasing ROM.
According to that study, it should be done once or twice a week. According to Brad Appleton's Stretching and Flexibility, PNF should be performed every other day. Only one PNF technique per muscle group stretched in a given stretching session is sufficient, and one hold-relax technique lasts about a minute, which suggests that a daily PNF session should not last more than 15 minutes. Somewhere else I've read that 8 minutes is the minimum effective dose, because PNF is quite strenuous.
What would be a simple, clear (a la Jeremy Ethier or Jeff Nippard), video playlist with full-body PNF stretches that could be followed along unassisted 2-3x per week, for less than 15 minutes per day?