You need a strong core to hover over a public toilet, and firm biceps to carry boxed wine, so train your body for real life's stupidly simple ordinary tasks—fifty, to be exact. Get in shape with 50 stupid reasons to work out and 50 exercises to prepare your stupid muscles for each of them.

• The Stupid Fit Couple (@stupidfitcouple) are Karley Phillips and Aaron Denius, a real-life couple with a passion for fitness.
• Knock Knock Books: fun gifts or workout motivation? Both!
• Paperback; 7 x 9.5 inches; 160 pages; full-color throughout; ribbon page marker