Macronutrients 101

Confused about what macros are? What about the serving size of our macros? Learn more now!

Many have no idea what a serving of fat, carbohydrate, or protein is. So here’s a quick 101 on our macronutrients that include fat, carbohydrate, and protein!

Teens and adults who want to be healthy and successful long-term should understand the role and function of each essential nutrition along with the amount it should be consumed for energy.

There are six essential nutrients that include our macronutrients (fats, carbohydrates, and protein that provide us with energy in the form of calories), and the other three nutrients that do not provide calories but are also essential for life include vitamins, minerals, and water.


๐ŸฅฏCarbs are important. Why? Carbs = muscle and brain fuel and if youโ€™re too full to get your carbs in your energy and performance will suffer. โš ๏ธ Thatโ€™s why itโ€™s important to work with a dietitian to find the right balance of nutrients. ๐Ÿ‘Š

Many want to go keto but I discourage it…Carbs are the optimal fuel for athletes..why?๐Ÿ‘‡๐Ÿ‘‡๐Ÿ‘‡

๐Ÿฅ‘Fat cannot:

โŒRestore depleted glycogen

โŒAthletes who adapt to โฌ†๏ธ fat need โฌ†๏ธ more oxygen to convert fat โžก๏ธ energy

โŒReplace ATP w/in working cells as quickly or efficiently as carbohydrates.

Please keep eating ๐Ÿ carbohydrates for the sake of your health, well-being, energy levels, and athletic performance.


On an individual level, ideal fat intake person to person depends on so many factors.. i.e.
๐Ÿ“ŒBody weight
๐Ÿ“ŒActivity & goals
๐Ÿ“ŒTotal calories
๐Ÿ“ŒHealth status/ailments/genetic risk factors


So many asked about protein for kidsโ€ฆ specifically ๐Ÿคทโ€โ™€๏ธHow much protein to feed teen and adult athletes?

It depends but it is important to start with a baseline:

๐Ÿ“Œ25-30 g of protein for biological girls/meal
๐Ÿ“Œ30-40 g of protein for biological boys/meal
๐Ÿ“Œ10-15 g of protein at snacks for both teen girls and teen boys.


I recommend using the performance plate model to avoid worrying about counting calories as an athlete or busy adult. If you stick with your portions for weight management, muscle gain, or fat loss you’ll be set. Just remember thatย  ALL meals matter!!

Under eating and underfueling will not serve you.


Wendi Irlbeck, MS, RDN, LD, CISSN is a registered dietitian nutritionist, and performance coach. Wendi utilizes evidence-based science to tailor nutrition programs for athletes to optimize performance, minimize health risks, and enhance recovery from training while focusing on injury prevention. She partners with parents, sports performance staff, and special needs and recreational athletes to offer nutritional guidance and optimal athletic performance and lifestyle plans. Wendi provides virtual services including telehealth but is based in Nashville, TN. Wendi works with clients of all levels and ages across the US as well as Canada and the UK. You can find more about Wendi and schedule an appointment with her on her website.

Testimonials of Wendiโ€™s expertise from colleges, coaches, parents, young athletes, and high school administrators can be found at the testimonial link on her website. You can also follow Wendi onย Twitter,ย Facebook,ย andย Instagramย for more nutrition information. Service

Share these nutrition tips with your network

Is Your Athlete Fueling Enough to Perform & Stay Healthy?

Most high school and college athletes donโ€™t struggle because they arenโ€™t training hard enough.

They struggle because they are:

๐Ÿ‘‰Under-fueling without realizing it
๐Ÿ‘‰ย Eating โ€œhealthyโ€ but not enough for sport
๐Ÿ‘‰Training hard while under-recovering

Over time, this leads to:
โ€“ Low energy
โ€“ Poor recovery
โ€“ Increased injury risk

I created a free Athlete Fueling Checklist to help parents and athletes identify common fueling mistakes and understand what to fix next.