Andrew Huberman· PhD
the idea here is to get your arms overhead onto a bar you're holding on to the bar and your legs are going to drape down and your toes are going to be in contact with the floor so we're not talking about a dead hang here okay which actually requires that you engage some muscles that can actually aggravate back pain what you're doing here is you're going to hold on to the bar you're in more or less a hang except that your toes are supporting you or your feet or sometimes your heels are supporting you what you're trying to do is get lengthening of the spine basically what you're doing is the opposite of pressing down on those spinal discs