Yes, actually. Whenever someone says "You should do X" I immediately have a gut reaction to NOT do X. If it's phrased as "When I'm doing X, my Y increases by 20

Yes, actually. Whenever someone says "You should do X" I immediately have a gut reaction to NOT do X. If it's phrased as "When I'm doing X, my Y increases by 20%" I find that much more palatable. Telling me I should do something is a lot more annoying to me than presenting the information you're going to tell me anyway, and letting me make my own decision.