any thoughts on the use of baking soda or powder for cooking things like UMP cake, cupcakes etc.?

Maybe to counteract Lactic Acid buildup during workout. . . An old remedy.

I think its being asked if they affect the macros in some way. I'm not sure. Jason, Frank, CB any input to this?

This is definitely a kitchen question. Use it just as you wish. Use the UMP in the place of milk and sweetener and water to sub and the fluid in milk. I like to use it just to increase the mean of protein and make the item I am creating a food rather than a dessert.

Contest dieting? Up to the 4 week out, then get very strict.