Diagnosed as an adult, I have just realised that probably only my partner and brother in law have actually seen me injecting or testing, because I'm so discrete, not to hide, but because of way my kit is set up - at my home, kit is in a kitchen cupboard, where I stand with my back to the room, not for privacy, just because it's there; at parents' or sister's home, my insulin is in my bag, either in hall or whichever bedroom I'm staying in (and I'm careful to keep it away from where my nieces might investigate!) Recently I ran in a 2 day mountain marathon with my brother in law, involving carrying all lightweight kit for an overnight camp. I already knew the carbohydrate content of the cous cous packets we had for tea (one packet each - "normal" portion sizes are irrelavent in these races!), sitting outside with pack beside me, would have been daft to move. Did need 1 blood test during day 1 run, followed by a few crackers, but no insulin during day. Day 2 was so wet, that testing would have been difficult (no means to dry wet hands, so reading would have been diluted) but didn't need to. You don't carry a towel for an overnight camp - just remove wet shoes & socks, wash feet & legs in a stream, then dry feet with a T shirt, then hang shirt & socks on a fence or tent, then wear dry socks, plastic bags and wet shoes, replace day 1 socks next morning.