For the duration of Apple's continuous fitness activities, the specific requirements may vary according to the specific situation. But generally speaking, the duration of continuous activities is usually determined according to individual fitness goals and plans. Here are some suggestions to help you achieve your goal of continuous activity:

1. Set goals: First, you need to be clear about what you want to achieve. Do you want to exercise for an hour every day, or five days a week, and so on. Make a reasonable and specific goal according to your actual situation and time schedule.

2. Make a plan: Making a fitness plan can help you manage your time better and ensure continuous activities. Arranging activities at a fixed time every day can help you form a habit and ensure that you have time to participate in activities every day. If you like to participate in activities several days a week, make a weekly plan to ensure that you participate in activities on the specified days.

3. Find motivation: Participating in activities with others or joining a fitness community can provide you with extra motivation and support. You can set goals with friends, supervise and encourage each other.

4. Gradually increase: If you just started fitness or have been doing continuous activities for a short time, it is very important to gradually increase the duration of activities. You can choose a shorter time period at the beginning, and then gradually increase the time and intensity until you reach your desired goal.

Please note that the above are some common suggestions, and the specific situation needs to be adjusted according to the individual's physical condition, goals and abilities. Please also consult relevant health experts for more specific and personalized advice.