Personally what made a huge difference for me is not having a super stressful work where I couldn't stay at home to rest. So instead of having a cold for 2-3 da

Personally what made a huge difference for me is not having a super stressful work where I couldn't stay at home to rest. So instead of having a cold for 2-3 days, it stuck around for weeks and I got them very frequently. I've old had a single cold this winter, it was pretty mild and over in a day or two.