When i get ill, whether its a sickness bug or cold/flu, it always takes me at least 2 weeks to recover.i always get very weak.how do i recover quicker?

Flu/cold: First off, 2 weeks to recover doesn't sound anything shockingly abnormal. A lot of folks have the acute phase lasting 3-5 days but then it takes a week or two and even longer to tackle the cough and other symptoms. At least in my case it's more than 2 weeks. I've found a good prevention measure - rinsing nose with salt water through neti pot on a daily basis even when you're not sick or even close.