It’s Monday. It’s Tax Day. We’re guessing you could probably use a little extra motivation to get going today… So let us introduce you to Nikki Nixx. The model/fitness coach has a website dedicated to designing out-of-the-box workouts and personalized weight loss plans, her own line of workout gear and in case that wasn’t enough, Nikki’s also got one of the best Instagrams in the business. Take that, Monday.