Hi Norty and welcome:
The term ‘metabolism’ is thrown around quite freely. What goes down is your TDEE. As you have less weight to move around all day, your calorie requirement shrinks. You can test this by going to your TDEE calculator (there is one on the top of this page), putting in your current information and then putting in your goal weight. The TDEE for your goal weight will probably be less than for your current weight. This is the slowdown in ‘metabolism’ that they are talking about. And it is not a bad thing, as it reflects the fact you are losing weight!
Here are some tips that might help: https://thefastdiet.co.uk/forums/topic/the-basics-for-newbies-your-questions-answered/
Good Luck!
11:55 pm
14 Jan 15