Remember, you canât out-exercise a bad diet so if youâre eating too many calories each day, it doesnât matter how much walking youâre doing since you will not be able to burn it all off. So, focus more of your attention on the foods youâre eating.
1 Keratosis pilaris causes numerous small, rough, tan or red little bumps around hair follicles on the upper arms, thighs, buttocks, and cheeks.  Keratosis pilaris creates the appearance of gooseflesh, goose bumps, or chicken skin.
An arm rash can have a variety of causes, and it may indicate something occurring around the arm itself or suggest a systemic (body-wide) condition. Contact dermatitis (skin inflammation) is caused by an adverse reaction to something that touches the skin, including chemicals found in detergent, soap or a fragrance.For example, you may develop a rash on your arm when you wear a shirt that was washed with a particular detergent or treated with a chemical.Metal, such as jewelry, can also cause arm rash.or example, you may develop a rash on your arm when you wear a shirt that was washed with a particular detergent or treated with a chemical. Metal, such as jewelry, can also cause arm rash.