No, sleeping is not for losers. You've probably come across some sleep hacking articles that guarantee high performance on 3-4 hours of sleep. The goal of boosting your productivity is understandable, but the means are harmful. You need to rest; your mind and your muscles need the healing reset from sleeping to face a new day.
But even more important than lying on the bed for many hours is having a good sleep. Efficiency doesn't necessarily mean cutting down sleep hours, but rather understanding and controlling your sleep cycles. Each sleep cycle lasts for around 90 minutes and consists of two states: light sleep and deep sleep (also called REM). It works like a roller-coaster slope: first, you fall in a light sleep and gradually get into the REM phase, where you remain dreaming for 30-45 minutes. After that, you start climbing to a new light sleep phase - then it starts all over again. There are 4-6 iterations of this cycle in a regular night of sleep.
The keys for more efficient and restful sleep are: 1) sleeping a minimum amount of hours (at least six), and 2) waking up in an ascending light sleep phase. It's not an easy goal to achieve unless you have some sort of tracker. Lucky you! There are fantastic sleep tracking apps like Sleep Better With Runtastic, that will make it easy to wake up at the right time.