Not sure if its the healthiest advice but it works for me when I get alil under the weather. I use those emergencee packs and take extra immune supports twice a day. "Super Immune +" is what works for me . I go lower weight/ higher rep and try to sweat out alil light cardio afterword without getting too fatigued(4mph at 15% incline on treadmill is my thing)Plenty of fluids of course and I drink tons of green tea with raw honey all day. That's pretty much my ritual and I feel it at least helps get me thru it faster.