What to do if i have recently lost 30 lbs and now my skin feels loose. will walking tighten my skin?

Exercise helps: Tissue laxity following weight loss may improve with improved muscle volume and tone but other factors come into play like: age, stretch marked skin, sun damaged skin, degree of laxity, location of lax tissues, whether the tissues are being supported with a support garment etc. Consult with your local plastic surgeon for more specific answers as some patients may only improve with surgery.