India, Jan. 27 -- Ever find yourself at work trying to get everything done even though you'd rather be in bed nursing your cold? Researchers say this can lead to a vicious circle of excessive demands and constant fatigue - especially when working from home. How can we limit our presenteeism? Berlin (dpa) - Many people go to work ill, be it because they need the money and can't afford to take time off or because of job insecurity, a heavy workload, the feeling that they're irreplaceable the love of their job or management expectations. But the price may be more than a headachy, sniffly slog through the day. A recent study by researchers from the University of Groningen in the Netherlands and the Chemnitz University of Technology (TU Chemnitz...