You need to sleep to build abs. Because the hormones that control your fat burning quality can be disrupted due to lack of sleep. Scientists at the University of Chicago have revealed that just 3 nights of sleep can cause muscle cells to become resistant to the hormone insulin. Over time, this can cause fat build-up around the belly.
Rethink your goals for the 15 minutes before going to bed to get better sleep. As you do this, write down the work plans for the next day, as well as any small chores that you have to do. By doing this, you will avoid the next day thinking about what to do, turning around in bed, and thus improving your sleep quality.