When you start an exercise program, your body naturally goes through several changes in the first couple months.
A new exercise regimen puts stress on your muscle fibers.
Your body responds to the micro tears and inflammation in two ways that cause temporary water weight gain.
Why do I weigh more after working out?
Right after a workout
Shape says inflammation from your muscles trying to repair themselves can cause temporary weight gain, as can water retention that sometimes happens post-workout. Either weigh yourself before the gym or wait until the next day.
How long before you see results from working out?
Muscle fitness – expect to see small changes in the first few weeks. Within three to six months, an individual can see a 25 to 100% improvement in their muscular fitness – providing a regular resistance program is followed.
What happens to your body when you start exercising?
Within the first ten minutes your heart rate increases meaning there is an increased supply of blood to the brain, making you more alert, blocking pain signals and then the body will use different energy systems depending on the duration and intensity of the exercise.