I definitely feel sluggish after running. Is it just my imagination?

I recently started running hard to lose weight and manage my health. Losing weight is great, but at the same time, my facial elasticity dropped sharply, and I feel like my cheeks are sagging. I wonder if the constant up-and-down impact while running has caused my already sagging skin to droop even more, or if it might just be due to aging...

I am wondering if Shrink Universe is effective on sagging skin caused by loss of elasticity from running. I heard that Universe is better for tightening the jawline because it has multiple modes; can it firmly lift only the sagging areas without causing hollowing in the cheeks, even for a face shape like mine that has lost volume and sagged from exercise? I would also like to know if the face swells significantly or if red marks tend to last a long time. Typically, how many shots are appropriate for focusing on the lower face area that has sagged due to loss of elasticity, like mine?