Hi, i am a new member who enjoys working out on my treadmill every day. i also use free weights. my question is this. i have increased my workouts to 3 miles per day with a quick warm up then proceed to 4.0 mph for 40 plus min. i have noticed that instead of loosing weight, i have gained weight. 2 lbs to be specific. also worth noting, i did quit smoking aprox 2 wks ago. now i know, that some people will eat instead of smoke, however, i havent changed my eating habits. also will protein powder added to a fruit smoothie cause this weight gain?? i have been drinking 16 oz frozen fruit smoothies with 1 scoop of protein powder added for breakfast followed by a lunch of fresh chef salad. ususally nuts or 1 apple for a mid afternoon snack with dinner consisting of 1 svg of meat and 1 starch and 1 vegie. one more question. will diet sodas cause weight gain? i know lots of questions, sorry