i’ve added enzymes and betaine HCL (well, i take them, not mix them in) to my during and just post workout shakes or any food i eat. your stomach shuts off digestion so if you’re consuming anything that needs digestion you should help it along. also, drinking a large volume of water dilutes the digestive enzymes that are already in your stomach trying to work hard, so it makes it even harder. so, don’t stop drinking but think about adding some enzymes to your workout time routine. i find sometimes if i don’t take them, i feel sorta sick to my stomach. the only thing i have is usually some protein and carby type thing like bananas or other fruit during my workout. even if i use surge i go with the enzymes… might help you. good luck!