The Core Diet Blog

Beth Peterson

IRONMAN Triathlete and Registered Dietitian

Registered Dietitian Name:Beth Peterson

Instagram:@imbethpeterson

Hometown:North Easton, MA

Where Beth Grew Up:Pittsburgh, PA

Education:BS Nutritional Sciences from Penn State University; currently working towards an MS in Nutritional Sciences from Arizona State University

Dietitian Experience:Beth has now been a registered dietitian for over 20 years, and in many different capacities - clinically, in wellness, and with athletes. Although the focuses are a bit different each time, the goal is the same - to help people live, feel, and perform better through solid nutrition and fueling.

Athletic Highlights:Beth grew up as a runner and competed in cross country and track throughout high school, and then for Penn State. After college, like most injured runners, Beth turned to triathlon, expecting to do one or two sprints for fun, and then get back to running full time. More than 15 years later, seven of which were spent racing professionally, Beth still at the triathlon thing. She had taken time away from IRONMAN to do ultra run races (those are hard), mountain bike racing, and even some off-road triathlons. Ultimately IRONMAN lured Beth back in. Now as an older, slower age grouper, Beth still enjoys the grind of the training and lifestyle.

Hobbies:Eating pizza? Swim/bike/run takes enough time...

Why work with The Core Diet:Beth's first experience with the Core Diet was as an athlete. The approach to race fueling made SUCH a big difference for her, that she jumped at the opportunity to be on the other end of the nutrition education, when it was offered. The attention to detail and the science-based approach to fueling is really second to none.

Favorite Quote:“Courage, dear heart.”

                                        - C.S. Lewis 








































































































































Nutrition During COVID19.

Most mental health professionals suggest that in stressful times, such as these, to control the controllables. Make nutrition one of those controllables! Read our nutrition tips to put you in a better mood, boost your immunity, and reduce stress and anxiety!

Working From Home? Tips For Managing Your Nutrition.

In the midst of a global pandemic, and with restrictions on leaving and/or working outside of our houses, many people are working from home for the first time in their lives. For many, this means being out of our normal routines, and after having likely greatly over-shopped, a refrigerator and cupboards full of goodies never too far away. Add to this the notion that the present world-context has placed our baseline stress and anxiety levels at an all-time high, and we have a recipe for over-indulgence. As a registered dietitian, I have most definitely seen an increase in clients reaching out, waving the “SOS – I am eating everything in sight – how do I stop?” flag.

What To Do - The Million Dollar Question

Someday, 20-30 years from now, the next generation of endurance sport athletes, and non-athletes for that matter, will ask the million-dollar question: “What did you do during the COVID-19 Pandemic?”

Tips For Keeping Healthy During Cold and Flu Season!

‘Tis the season for the flu, winter colds, and other upper respiratory infections (URI) that put a damper on our workouts and threaten our fitness. It is well-reported that during periods of heavy training and racing, athletes are more susceptible to, and may experience, an increase in URI. A “window of altered immunity” following prolonged or heavy exertion exists (that may last between three and 72 hours), wherein many components of the immune system exhibit change. This window is an opportunity for viruses and bacteria to gain a foothold. In addition, factors such as travel, low energy availability, and high levels of stress and anxiety also put athletes at risk. So, what can we do from a nutritional, training, and lifestyle standpoint to combat getting sick? Read on for some recommendations to maintain immune health and keep running strong!

Racing In Europe? Nail Your Nutrition Just Right!

Headed to 70.3 Worlds in Nice, France (or any European Ironman event, for that matter), and wondering about on course nutrition and how it compares to what you might normally use? Read on!

Fueling Ultramarathons

Get the skinny on how to fuel your next ultra distance run race in this blog. Make sure your fueling allows your true run fitness to shine through!

Tart Cherry 101

By now, most people are familiar with the use of tart cherry as a means of recovery but what are the more nitty gritty details that you need to know? Read below!

Hot Weather Running

When the weather gets hot, there are some basic hydration guidelines you should follow before, during and after your training sessions. However, when the summer months kick into high gear and the rise in temperature and humidity cause you to break out in a sweat the moment you walk out the door, it’s time to step up your hydration plan. Read on for some key points to consider during these summer scorchers:


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