I like to tape my penis to a doorknob
excellent
here are a couple of tips
never count seconds or whatever count breaths the breaths should be slow and relaxed. magically, the count is halved so that's one way to reduce the monotony and focus on feeling the stretch
for example, the "penis to doorknob pose" they say hold for 30 seconds four times per side or it's meaningless
you can hold it for 15 breaths, however, with more meaningful results