Should you buy the Whoop 4.0 or wait for Whoop 5.0?

This is one of those rare cases where shopping can be a non-decision for some people. Part of the point of Whoop’s subscription model is that whenever new hardware is released, you get it automatically — so if you want a fitness tracker immediately and you’re severely tempted by the Whoop 4.0, you might as well hop in while you wait for the Whoop 5.0.