Your targets are recommended based on your primary health goal (e.g. lose weight or improve heart health) and your current nutrition/activity levels. They are intended to be challenging, but achievable and bring you closer to your long term goals. 

Your targets are reviewed on a weekly basis and if there’s data for at least 4 days of the previous week, the difficulty is adjusted based on your performance - e.g. if your step target last week was 2500, but you consistently outperformed it, we might make it a bit harder and recommend you to go for 3000 this week. However, if you’re not able to consistently hit this target yet or had a tough week, we might make it slightly lower to keep you motivated and bring you back on track.