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Amelia Phillips

Australian exercise scientist and nutritionist (BHSc, MNut), host of the Healthy Her podcast and co-founder of Vitality360.

Oct 7, 2026

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0:27
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0:30
Think of it like a, a barometer, like a, a temperature gauge, and imagine you've got a temperature gauge.
0:36
And imagine that the thermostat is set at, so that's your deltaFosB, is set at a level, and that's the level of satisfaction and stimulation.
0:46
So dopamine, which is the, which is the driver, dopamine is the hormone, the seeking hormone, okay? And that's the hormone that if you've got a drug addict or a person that, you know, is addicted to screens and whatnot, they're, they're seeking that dopamine hit.
1:01
Once that dopamine hit and the dopamine fires up to this thermostat deltaFosB level, that's when you, that's when you get the high, that's when you get the satisfaction.
1:12
It's the equivalent of if you go online shopping, you find the thing, you click on it, or the lion catching the prey.
1:17
They eat the prey.
2:16
[laughs]
26:38
What are your thoughts on that? Is that something we can exercise while we're fasting or we absolutely shouldn't be exercising
26:45
while we're fasting? I wish I could give you a definitive, this is how it is and here's the research to back it up.
26:52
And I 100% stand by that.
26:54
But of course...
26:55
As you know and your very health literate listeners will know that the devil's in the detail and it's nuanced.
27:01
And the answer is prolonged overnight fasting can be super, super helpful and healthy for some women and not so much for others.
27:09
So let me try to help your listeners decide which camp they stand in.

12 MINS LATER

39:44
Do you think cortisol is to blame or are there other factors that contribute to that belly wave?
19:55
What we don't know, we can't improve, you know?
19:57
And I'm a strong believer in tracking when you're young and healthy, because then you have a baseline.
20:03
'Cause then if you get to post-menopause and the wheels have started to fall off a little bit, you can go back and say, "Well, five years ago my cholesterol, my LDL and triglycerides were down here.
20:12
And now, although they're not in the really dangerous, they've jumped up 30%." Well, then, you've got a very clear track and a trend that you wanna get on top of.
20:22
So that's why I'm a big fan of getting this done when you're young and healthy and, and keeping those results handy.
20:29
And the final one on that heart health is your blood pressure.
20:33
And it's so interesting, because a lot of women associate their blood pressure as having low.

9 MINS LATER

29:52
So what is your thoughts on that?
2:55
[laughs]
2:55
And especially 'cause I know today's episode, we're really drilling down on weight management and boosting our energy, so I'm gonna kind of sh- shape today's conversation with those two things in mind, assuming that that's what your listeners are wanting to achieve.
3:10
And I guess when I first started out in the industry when I was 17, it was 29 years ago, I started out in the exercise science space.
3:20
I fell in love with exercise.
3:22
I saw what it did for my health and for my mental health as well, and f- for others.
3:28
But what very quickly became apparent to me was how important nutrition was.
3:34
And what I found was once people got into the habit of regular exercise, it's actually not that hard.

21 MINS LATER

24:16
And that really comes down to f- for me, for my exercise issues-

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