Good morning. Today we're gently exploring how what you eat, how you move, and how your nervous system processes stress are woven together—affecting your energy, focus, and mood in ways that are often more connected than they appear. Whether you're noticing an afternoon slump, tension in your jaw or neck, or simply wanting to feel more steady day to day, there are small, grounded steps that may help you feel more supported in your body.
You might find it interesting that the way you eat may influence your mood more directly than once believed. According to Dr. Drew Ramsey, a psychiatrist speaking with Dr. Mark Hyman on 'The Doctor's Farmacy,' a Mediterranean-style diet trial for clinical depression showed a 'number needed to treat' of about 4—meaning roughly 4 people needed to follow the approach for one person to experience meaningful benefit—compared to about 10 for augmenting antidepressant medication with an atypical antipsychotic. Dr. Ramsey also cited correlational research, including findings from the Women's Health Initiative, linking diets high in processed foods and high-glycemic foods to increased depression risk. He was careful to frame this as complementary to, not a replacement for, medication and therapy.
This connects naturally to why your energy might dip predictably each afternoon. In a separate episode from Mark Hyman's podcast, the host explained that the well-known 2-4pm crash is often driven by three interconnected factors: blood sugar spikes and drops from meals low in protein and high in refined carbohydrates, disrupted circadian rhythm from inconsistent sleep or limited morning light, and cortisol dysregulation from ongoing stress. Both conversations point to the same underlying idea—steady blood sugar and a well-regulated nervous system support steady mood and energy.
Movement also plays a meaningful role in brain health, not just physical fitness. According to Dr. Tommy Wood, a neuroscience researcher speaking with Andrew Huberman, a randomized trial comparing a six-month high-intensity interval program (the Norwegian 4x4 protocol) to moderate 'zone 2' cardio found that while both improved fitness similarly, the interval group showed better outcomes in the hippocampus, a brain region tied to memory—and this benefit was still measurable five years later.
Even physical tension can have a nervous-system component. Dr. Joe Damiani, a physical therapist speaking with Dr. Will Cole, described how chronic jaw, neck, and headache pain is often influenced by how the nervous system interprets signals from the body—not just by structural issues alone—which may explain why brain fog frequently accompanies these pain patterns.
Finally, Dr. Mark Hyman noted in a separate Q&A that subclinical thyroid symptoms and gut imbalances are often dismissed as 'normal' fatigue, when they may reflect an underlying, addressable pattern worth discussing with a provider.
1. **Build balanced meals.** Try including protein, healthy fats, and fiber at each meal—Dr. Mark Hyman's podcast suggested pairings like eggs with avocado and greens, which may help support steadier blood sugar and reduce the likelihood of an afternoon crash.
2. **Get natural light within the first hour of waking.** Even 10-20 minutes outside was described in Hyman's episode as a way to support your circadian rhythm, which helps regulate cortisol and melatonin timing.
3. **Notice your afternoon patterns.** If you experience a predictable 2-4pm dip, consider whether breakfast or lunch included enough protein, and whether caffeine was consumed alongside food—this pairing was suggested as a way to buffer caffeine's effect on blood sugar.
4. **Explore gentle, consistent movement.** If you're already doing steady-state cardio, that's valuable on its own; if your provider agrees it's appropriate for you, you might ask about structured interval training, given the brain-related findings Dr. Tommy Wood described.
5. **If you experience chronic jaw, neck, or headache tension, consider the nervous-system angle.** Dr. Damiani's framework suggests that gentle movement retraining alongside physical treatment—rather than physical treatment alone—may be worth discussing with a physical therapist familiar with this approach.
6. **Reflect on your plate, not perfection.** Dr. Ramsey emphasized leafy greens, colorful vegetables, and seafood over any single 'fix'—small, sustainable shifts over time matter more than dramatic overhauls.
This briefing is for educational purposes only and is not a substitute for personalized medical or psychiatric advice. Dr. Ramsey was explicit that biological contributors to low mood—such as thyroid dysfunction, B12 deficiency, or iron issues—should be ruled out by a provider rather than self-diagnosed, and that supplements like fish oil can interact with medications such as blood thinners. If you're considering high-intensity exercise like the interval protocol Dr. Wood described (85-95% of maximum heart rate), please consult your provider first, particularly if you have any cardiovascular or joint conditions. If you notice persistent fatigue, unexplained mood changes, chronic pain, or gastrointestinal symptoms like severe or prolonged diarrhea, it's important to bring these to your healthcare provider promptly rather than managing them alone. As one physician noted in a separate discussion, it's always reasonable to ask your provider why a particular recommendation applies specifically to you, and to seek a second opinion if something doesn't feel right.