[Q.]

I had the flu with fever almost two weeks ago but the cough and other related s&*t didn't away until the past day or so. I thought that, because the fever had gone, I'd be ready to hit the gym but, when I tried, I had nothing to give! I finally feel normal enough to go back to a full workout but it sure seems like it took a while. Is this a function of my age or does it just take a while? I've tried doing light stuff now and again but
could only muster meager efforts... it was disappointing!