Positive Impacts on Hair Growth?

Do the following have POSITIVE impacts on hair health?

1. head massage – No.
2. other techniques for increased blood flow to head – Nope.
3. healthy diet, if so what foods are important to eat and which to avoid? – You should have a balanced diet.
4. use of dandruff shampoos – No, sir.
5. use of any particular shampoo or conditioner – No impact.
6. vigorous exercise – No.
7. any activity that promotes increased cardiovascular health – Nope.
8. use of dietary supplements (vitamins and minerals) – No impact in moderation.