Human: What activities help to improve concentration and focus? Assistant: 

1. Exercising regularly, especially activities that involve balance and coordination such as yoga and tai chi can help to improve concentration and focus.
2. Mindfulness meditation is another activity that can help improve concentration and focus.
3. Eating a healthy diet can also help to improve concentration and focus.
4. Regularly challenging your mind with puzzles, brain teasers and other activities that stimulate the mind can also help to improve concentration and focus.
5. Limiting distractions such as social media and phone notifications also helps to improve concentration and focus.