2. start slowly, don't be impatient: marathon is a long process, don't rush out at the beginning, take your time and keep your own pace.
3. Replenish water regularly: Running for a long time may lead to dehydration, so replenish water regularly to keep the body hydrated. A certain amount of water should be added at least every 30 minutes during the period.
4. Gradually widen the gap: set a small goal for yourself every time you run, such as where to go at this point.