Wash with a wash cloth. After getting used to a wash cloth, you will feel so clean that just using soap will not feel like a shower.
Use the wash cloth with soap on your hair and scalp to wash there very effectively. Then use your regular shampoo.
You may want to use any dandruff shampoo as a body wash to kill fungus that may be causing Body Odor . Fungus causes jock itch, dandruff, and athletes foot. The name depends on where it is located. Head and Shoulder is great for this as it comes in a big bottle and it is cheap and has the 1pct of Pyrithione Zinc.
After showering, fill the wash cloth with rubbing alcohol and rub it all over your body.
Men, don't be afraid to shave your armpits. There is no reason for hair to have to be there. It just makes for smellier armpits.
If your problem is bad breath, stop chewing tobacco, smoking and drinking coffee. After you brush your teeth, put a dab of toothpaste on your pointing finger and use it to rub the toothpaste in the pockets in the back of your mouth on the sides.