The effects vary. Here's the experts answer on the temporary gain: www.sparkpeople.com/community/ask_the_expe
Generally speaking, give new lifestyle changes as much as 6-8 weeks (diet and exercise both) to start showing up on the scale. :) how long it takes each person is completely individual.
Ab exercises can give you a stronger core, but they won't "tone" your stomach... squats don't tone your butt and legs. :) They make them stronger, but how your muscles "show" is more about body fat percentage, not muscle strength. Strength training is important for many reasons, to preserve lead muscle mass, increase metabolism, boost performance... but burning fat from specific parts of your body, not so much. The term "tone" doesn't realyl mean anything, from a fitness perspective. It's more of a marketing term than anything.
Muscle gain is very slow... no, you likely did not gain 5 lbs of muscle in just a month. Body builders think in terms of a lb a month or less. :) However, our bodies can fluctuate as much as 10 pounds in a single day! You see, our weight is not a static number. It's a vital sign, like your blood pressure or body temperature. Depending on the foods you eat, and the activity you do, it will change several times over the course of a day! The other day, I weighed myself in the morning. 190.2. That night? 195.6! I didn't gain 5.4 lbs in a day. ;) Not of fat! However, I did eat, and the food was high in sodium.
Check your diet... do you eat out a lot? Eat a lot of prepackaged stuff? Salt content can have a greater effect on the scale than you realize, even when you eat in your calorie range. It takes roughly 3500 calories to make a pound of fat. Which means that you have to eat that much OVER your normal metabolic rate (BMR) to gain! In order to gain 5 lbs of *fat*, you'd need to eat more than 17000 calories over the course of a week, on TOP of your daily BMR (between 1500-2000 for most people).
Edited by: DRAGONCHILDE at: 12/18/2012 (20:28)