 
 <prompt> Wetin DST dey do? Based on di last question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: DST get different effects for health. For societies wey get fixed work schedules, e dey provide more afternoon sunlight for outdoor exercise. E dey change sunlight exposure; whether e go good or bad depend on person location and daily schedule, as sunlight dey trigger vitamin D synthesis for skin, but too much exposure fit cause skin cancer. DST fit help for depression as e dey make people wake up early, but some people dey argue say e dey do the opposite. The Retinitis Pigmentosa Foundation Fighting Blindness, wey dey chaired by blind sports magnate Gordon Gund, successfully lobby for US DST extensions for 1985 and 2005. 