Yes, it can slow your metabolism a wee bit – why would that be a bad thing?
Because a slower metabolism makes weightloss and keeping the weight off much harder than it has to be?
On/off fasting technique – we all do that every day – it’s what happens when we go to sleep at night.
I meant “intermittent fasting” which got popular after the Horizon programme last year:
http://www.bbc.co.uk/news/health-19112549
This whole dieting thing is not at all complex
I’m happy to stick to “calories in < calories out” – that’s simple and working well for me.
1900 appears a bit high before exercise even though you’re a bit bigger than me (height not weight).
My MFP target is 1880kcals so not far off ton – and that fits with various other online BMR and TDEE estimates.
(I’m male, 37yo, 188cm, 87kg)