It is normal to sweat when we exercise. It is not normal to sweat when we are sitting in an air conditioned office and we experience excessive sweating from the underarms, palms, feet or any combination of the above. The question you asked about sweating is very generic - but I will address primary hyperhidrosis alone as it is the type of hyperhidrosis that is treatable. Primary hyperhidrosis is located in distinct parts of the body - head, underarms, palms, groin, feet, or any combination of these areas. For your problem with excessive sweating you should first try topical agents containing aluminum chloride, such as Aldry.  If these don't work, or if they cause skin irritation, then you should try Botox injections which can ameliorate sweating  for about 4 months.