I tend to find I'm safe because I mostly lift weights (practising my grip-strength right now for improving bouldering, so lots of dead-hangs, hanging-leg-lifts etc). Most of the new-year crowd seems to stick to doing curls at best, and cardio at worst.  I've never seen a new-start try to play with weights.  It's hours minutes of jogging, cycling, and rowing.  Coupled with too-many selfies and so on.