Protect yourself for the viruses going around in summer
The last thing you need is to be sick after coming back form your vacation or even worse psi k when you are preparing to vacate !
Simple things to do to boost your immunity : sleep tight for 7 hours at least
Take melatonin with you and use it it it Anti Aging Anti cancer and Anti Inflammatory and increase your resistance to infections.
Be liberal in taking vitamin C
Zinc is another friend of your to take in your backpack! 30 mg daily
And Enjoy your travel and vacation !