Ever wondered what it's like to be conscious while you're sleeping? Well… turns out there's yoga for that: Yoga Nidra, or ‘yogic sleep’. Yoga Nidra refers to a state of consciousness between waking and sleeping, like that moment just before falling asleep. A major difference with meditation is that rather than focus, the goal in Yoga Nidra is to completely relax. In short: during a Yoga Nidra class, the yoga teacher guides you through a 60-minute supercharged power nap.