Tips to keep your mind clear:

1. Exercise: Exercise can promote blood circulation, increase oxygen supply to the brain, and improve mental clarity. Common ones include jogging, brisk walking, swimming, etc.

2. Regular work and rest: Maintaining regular sleep and eating habits is beneficial to the maintenance of brain function. Adequate sleep, in particular, is crucial to improving mental clarity.

3. Learn new knowledge: Absorbing new knowledge promotes connections between neurons in the brain and expands horizons, helping to improve mental clarity and thinking ability.

4. Attention training: Attention training through reading, small games, etc. can help improve concentration and mental clarity.

5. Relax: Maintain a good mood and mentality, avoid excessive anxiety and stress, and make your mind clearer. For example, rest and recreational activities can help relax your mind.