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.
Reasons for Flabbiness. Arm flabbiness is caused by an excess of fat, which can be the result of natural changes that occur with age. According to MedlinePlus, after the age of 30, body fat has a tendency to increase and lean muscle typically decreases.