Soda? why? yuck. And peace to your insulin sensitivity if you drink a good amount- not conducive to gaining muscle...but very conducive to gaining blubber as we all know. Most "juices" out there arent much better, I only drink juice (100%) perhaps in the morning or pre/intra/post workout when I'm trying to spike insulin, and with juice you don't worry about preservatives, chemicals etc like nasty ass soda. Fresh squeezed juices- those are healthful regardless as long as liquid calories is not a concern for you. Prolly **** in soda we don't even know about thanks to FDA labeling laws. Lol, my buddy in high school insisted he felt much more of a difference in his sports performance from quitting drinking soda than quitting cigarettes, who knows haha but statement has always stuck out in my mind, I've never LIKED soda much though thankfully so it's not hard to steer clear. Thats my 2 cents but enjoy life if it's really a treat to you then drink some here n there! Beer n liquor is counterproductive to gains but most of us who drink to any extent are gonna toast a beer/shot here n there through life