Many men?
If you are wearing a suit, a smartphone makes the trouser pockets bulge a lot, so it's common to keep it in your shirt pocket or jacket inside pocket - Both of which is next to your heart.
If you are wearing a suit, a smartphone makes the trouser pockets bulge a lot, so it's common to keep it in your shirt pocket or jacket inside pocket - Both of which is next to your heart.
1: https://www.fda.gov/radiation-emitting-products/cell-phones/... 2: https://www.heart.org/en/health-topics/arrhythmia/prevention...
Same with smoking, drinking, taking drugs, etc.