If it's for unwinding, as OP wanted, I'd recommend specifically indoor climbing. There are three kinds basically: speed, lead, boulder. The best one is that wh

If it's for unwinding, as OP wanted, I'd recommend specifically indoor climbing. There are three kinds basically: speed, lead, boulder. The best one is that which has the least commute for you. If multiple are accessible, start off with lead, then you can easily switch. Lead climbing is about two quite old-fashioned concepts: bravery and trust far more than about thinking (or anything else). Also, that prevalent myth: arm strength is not a pre-requisite. Heck, I personally know climbers who cannot do even one strict pull-up and still lead decent routes.