“Several reasons. Firstly, swimming the same stroke all the time would get boring…for you and me! Second, developing skills in other strokes will often help your favourite stroke. Improving your fly can help your freestyle and backstroke underwater kick. Working on backstroke can enhance your catch and shoulder flexibility. Thirdly, it gives you options. Sometimes if you just focus on one stroke and it is not improving – what we call a performance plateau -, you can get bored, frustrated, angry and even despondent. By spending time working on skills, technique and performance in other strokes you will often find that your main stroke starts to improve as well.