Clean Water
It is just logical filtering water is essential to our health. Chlorine, fluoride, trace amount of pesticides, pharmaceutical drugs, chloramine and heavy metals are all know contaminants in our drinking water. Bottled water is nothing better with micro-plastics and BPA. So I only rely on filters to ensure a clean source of H2O in my body. It does not need to be expensive. Most activated carbon filters do a great job. Reverse Osmosis filter is even more safe and we can easily balance our minerals absorption by taking more natural salt. But of course I pursue even better quality water with far infra red technology. As I know my body is made up of 70% water, its worth it to invest more.