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.
Quick Answer. Some of the causes of tingling in the left arm and hand or both arms and hands, include diabetes, nerve entrapment syndromes, systemic diseases and vitamin deficiencies, according to WebMD. Other causes include alcoholism, toxins, infections and injury.