Recently, I’ve been feeling tired, really tired. The kind of tiredness that isn’t fixed by a good night’s sleep. On a drive home the other day, my mind was buzzing with thoughts of work until it landed on something different – my new hobby, scuba diving. Not long ago, my eldest son and I completed our PADI Open Water scuba certification. In our training, we learned about ‘safety stops’ - a planned 3-minute pause during the ascent from a dive.