
Jessica Downey
Jessica has been a fitness writer at Tom’s Guide since 2023, bringing three years of experience writing about health, fitness, and the great outdoors. Her passion for exercise began during her childhood, where she spent weekends hiking and competing in local athletics club events. After earning a master’s degree in journalism from Cardiff University, Jessica found the perfect way to combine her love of storytelling and fitness into a career.
Jessica is passionate about testing fitness gear and tech, using her reviews to help readers make informed buying decisions. She ran her first marathon in April 2024, finishing it in 3 hours and 48 minutes. Through her training, she’s developed a deep understanding of what it takes to grow as a runner, from effective workouts and recovery techniques to selecting the right gear for every challenge.
When she’s not at her desk, Jessica enjoys spending time in the kitchen crafting new recipes, braving cold water swims and hiking.
Latest articles by Jessica Downey

Garmin adds rucking, trail maps and more to these smartwatches — what you need to know
By Jessica Downey published
Garmin's latest update adds sleep breath tracking, rucking with pack weight input, a stage timer, and premium golf and trail features.

12-year study reveals the type of exercise that makes you live longer — it's not cardio
By Jessica Downey published
A 12-year study published in the Journal of Strength and Conditioning Research suggests one simple workout habit could help you live a longer, healthier life.

I did a 30-minute core workout with zero equipment — here's how my abs responded
By Jessica Downey published
This 5 move, 30 move ab and core workout is perfect for building strength and definition without the need for any equipment. Let's go!

5 ways to boost energy levels during your period
By Jessica Downey published
Discover expert-backed tips to boost your energy during your period, from sleep and hydration to gentle exercise and nutrition.

Best running watches of 2025: Top picks for runners of all levels
By Jessica Downey last updated
Our runners spent time with dozens of the best running watches to find the best models for you and your training.

The best hiking boots to buy in 2025 — tested and rated for mountain trails and casual hikes
By John R. Quain, Dan Bracaglia, Jessica Downey last updated
These are the best hiking boots to in 2025, including the best waterproof hiking boots and the best hiking boots for casual trekkers.

Samsung Galaxy Ring is changing the game for cycle tracking — here’s how
By Jessica Downey published
Thinking of using the Galaxy Ring for cycle tracking? Here's what you need to know — and what a fertility expert thinks.

I swapped my trail runners for Columbia’s Escape Thrive boots in a rainy week of hiking — and I’m not going back
By Jessica Downey published
These waterproof hiking boots claim to be trail-ready in all conditions. After muddy climbs and rainy descents, I’ve got thoughts.

Forget the gym — build and sculpt your legs with this 10-minute workout
By Jessica Downey last updated
Want to build a stronger lower body in just 10 minutes? Here's a no-equipment Pilates-inspired leg workout from trainer Lily Sabri.

No sit-ups or crunches — use this 10-minute standing ab workout instead to sculpt a stronger core
By Jessica Downey published
Strengthen and sculpt your core off the mat and on your feet in just 10 minutes.

You can build a stronger core and upper body with just a set of dumbbells — here’s how a personal trainer would do it
By Jessica Downey published
This dumbbell workout uses supersets to build strength and definition in your abs and upper body. Fancy giving it a go?

Running your first marathon? Here are 9 essential things to pack for race day
By Jessica Downey published
Whether it’s your first 26.2 or your tenth, this marathon packing list has all the essentials to keep you focused, fueled, and finish-line ready.

London Marathon organizers issue heat alert for Sunday's race — here’s how 3 elite runners plan to stay cool
By Jessica Downey published
From elite advice to official guidance, here’s how runners can handle the heat at the London Marathon.

Tight hips? This 9-move Pilates routine improves hip mobility and lower-body strength
By Jessica Downey published
These nine equipment-free moves are designed to unlock tight hips and build strength in the lower body.

Strava just rolled out an AI-powered race predictor — here's how it works
By Jessica Downey published
The new Performance Predictions tool in Strava analyzes over 100 data points from your recent runs to forecast race times. We break down how it works and who can access it.

I did the elephant walk exercise for 3 minutes every day for a week — here's what happened to my body
By Jessica Downey published
I tried the elephant walk and discovered just how stiff my hamstrings really are.

I drank the viral gut health drink Kefir for a month — here’s what happened to my body
By Jessica Downey published
What is kefir and why is it linked to gut health? We tested it out for a month to see what benefits it has, if any.

I hate sit-ups — so I tried this 20-minute standing abs workout to build a stronger core
By Jessica Downey published
This no-mat workout is fast, effective, and surprisingly fun.

Forget the gym — you just need 5 moves to build lower body strength and boost your metabolism
By Jessica Downey published
Build a stronger lower body anywhere with this simple five-move bodyweight routine.

I asked ChatGPT to build me a race strategy for a half-marathon — and I was shocked at how well it went
By Jessica Downey published
From keyboard to finish line — how ChatGPT shaped my half-marathon strategy.

I tried a marathon manifestation and meditation session — here’s what happened
By Jessica Downey published
Can you manifest your way to marathon success? I attended a guided marathon manifestation and meditation class to find out.

Forget the gym — boost your metabolism and build full-body strength with this 7-move kettlebell workout
By Jessica Downey published
Set aside a small portion of your day to tackle this metabolism and strength boosting kettlebell workout.

I put the On Performance Flex Bra through marathon training — here's who should (and shouldn't) buy it
By Jessica Downey published
I put the On Performance Flex Bra through its paces during marathon training — here’s how it held up.
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