Well obviously if your sweating its because your not removing excess body heat. Ways you can prevent perspiration is to

• Eat warm food (your body does produce extra heat to warm up cold food and in-turn heat up your body)
• Wear breathable footwear and wear less layers of clothing

If you are worried about smelling badly because regular deodorant doesn’t work, try different brands that have different active ingredients, some people’s body odour bacteria are resistant to certain active compounds. For example i found out that the zinc related active compound actually makes my body odour worse, now I know I smell pretty good.