It's hard to get motivated enough to go to the gym. One way I'll force myself to workout is to watch Netflix while I'm on the treadmill, because I'm lazy and easily distracted. Another way is to buy cute athletic clothes.
In addition to the classic adidas Originals line, they've collaborated with Stella McCartney to create fashion-forward activewear that will get you excited about working out without breaking the bank. It will also make it harder to force yourself where real pants to brunch, but that is the price we pay for fitness.