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• Underprivileged segments hit hardest

• Bike riders, office workers, labourers struggle to cope with extreme heat

• Outdoor workers face hardship, household chores become tall order

KARACHI: By midday, Karachi, a city usually bustling with activity, begins to lose much of its vibrancy as intense heat and persistently high “feels-like” temperatures keep people indoors and restrict movement across the metropolis.