"No pain, no gain." In this mini-podcast Thembi and Jonathan explore the decisions we're all having to make about our learning muscles: which ones are allowed to get a bit flabby? Do we embrace 'desirable difficulties' and take the tougher - but more effective - route to learning via repeated and varied practice, thinking hard, and testing ourselves? Or should we relax, offload the cognitive effort, and just enjoy the world of SatNav and Gen AI?