As part of a tentative bulk, I weigh myself every Sunday morning, same time. Without wishing to be crude, I try to make sure all the variables are as constant as possible (i.e. bowel movements).
However for the last few weeks my weight has been all over the place, and it's worrying me. (n.b. i have NOT only been training 4 weeks, this is a recent snapshot)
4 weeks ago: 12 st 5 lbs (badly created split routine)
3 weeks ago: 12 st 8 lbs (badly created split routine)
2 weeks ago: 12 st 10 lbs (upper/lower split)
1 weeks ago: 12 st 9 lbs (upper/lower split)
this week : 12 st 12 lbs (upper/lower split)
What I really don't understand is this last week. How is it possible to put on 3 lbs in a week, when I'm eating 3000 cals per day and working out 4x per week? 3 lbs requires like 9000 calories excess in a week (3500 per week for 1 lb gain). The upper/lower split is a lot more physically taxing, with more compound moves and more iron shifted, so it's not a case of suddenly burning off less calories per workout as the previous split was far ''lighter''.
Anyone offer any help/advice please?
[Edit- 23 years old, around 12% BF.]