Cold weather can cause a flu. therefore, you should take care of your body warm, especially the parts of the body that you deserve to get warmth from me in order to reinforce its strength in the body.
Cold weather may cause the flu, so you should take care to keep warm, especially some of the body you deserve to get warm from me to strengthen the body.
The cold weather may cause to catch a cold so you should take care of your body warm, especially some of the body that you deserve to get warm from me to strengthen the strength in the body.