“…Overall, 'Use it or lose it' appears to be the strongest option, and 'This is your time -enjoy being strong and active' is the weakest. The superior performance of 'Use it or lose it' could be due to a range of factors, including greater familiarity with this term due to its colloquial nature, the elicitation of stronger favourable feelings relative to the other slogans, the attributes of rhyming and brevity that have been found in previous studies to enhance outcomes 9,14 , and the mention of a potentially negative outcome that could serve to emphasise the need to act on the message. 15 The second-highest performing slogan, 'Move more, live longer', had similar attributes in terms of brevity, alliteration, and providing a reason to comply.…”