In some softwares and WP themes, there are reading time estimates, based, one supposes, on some average figure of words per minute.
In today's Believing Prayer, I set a one-minute reading time, more to encourage people to click and read and pray. (Link: #^http://believingprayer.com/god-working/
Years ago, a book was published called One-Minute Manager
. Though one's spiritual life cannot be contained in one-minute prayers, neither are they inappropriate.
Prayer doesn't have to be long. It does have to be sustained.