![Sarah Klein Author Headshot](https://res.cloudinary.com/peloton-cycle/image/fetch/c_fill,dpr_1.0,w_270,h_270,x_568,y_235/f_auto/q_auto/https://images.ctfassets.net/6ilvqec50fal/2gQFrNw2aw2scs7DNqHEVw/16cdd1ff16ecde353b10f3f492eb9c08/sarah-klein-headshot.jpg)
Sarah Klein
Sarah Klein is a Boston-based health journalist with over 15 years of experience in lifestyle media. She has held positions at LIVESTRONG.com, Health.com, Prevention, and The Huffington Post. She is a graduate of the Arthur L. Carter Journalism Institute at New York University, and a National Academy of Sports Medicine certified personal trainer.
Sarah Klein's Articles (16)
![A man taking a rest day from exercise and doing some gentle stretches at home on a workout mat.](https://res.cloudinary.com/peloton-cycle/image/fetch/c_fill,dpr_1.0,w_316,h_225,x_480,y_375/f_auto/q_auto/https://images.ctfassets.net/6ilvqec50fal/4gyA9inF114TK36BmQ9osy/fc634a68977d8cb8cdeb3805c1016deb/how-many-rest-days-a-week-01.jpg)
Health
Quick Question: Are You Taking Enough Workout Rest Days Each Week?
![A woman closing her eyes while taking a cold plunge before or after a workout.](https://res.cloudinary.com/peloton-cycle/image/fetch/c_fill,dpr_1.0,w_316,h_225,x_812,y_503/f_auto/q_auto/https://images.ctfassets.net/6ilvqec50fal/1cVVIAovm1fzbyyRdWXTWi/a255b8ed552646c8a36888205517b4f8/cold-plunge-before-or-after-workout.jpg)
Health
Should You Cold Plunge Before or After a Workout? Why Timing Matters
![Woman does a plank row exercise at home](https://res.cloudinary.com/peloton-cycle/image/fetch/c_fill,dpr_1.0,w_316,h_225,x_5609,y_835/f_auto/q_auto/https://images.ctfassets.net/6ilvqec50fal/6a38330NIWbiK1ej2AWa9D/c19afd3814e4c159c6e0a05b6f66ff7d/GettyImages-1220053564.jpg)
Strength Train
The 10 Best Moves for Building a Strong Back
![A hand turning a modern, silver shower knob to the left.](https://res.cloudinary.com/peloton-cycle/image/fetch/c_fill,dpr_1.0,w_316,h_225,x_691,y_467/f_auto/q_auto/https://images.ctfassets.net/6ilvqec50fal/1OYSXGFfz7A422wE30yGt6/103e1ec4ddb4aa4ee33862932cefed28/cold-shower-before-bed.jpg)
Sleep
Which Is Better for Sleep: A Hot or Cold Shower Before Bed?
![Woman does a hollow hold core stability exercise](https://res.cloudinary.com/peloton-cycle/image/fetch/c_fill,dpr_1.0,w_316,h_225,x_2553,y_1272/f_auto/q_auto/https://images.ctfassets.net/6ilvqec50fal/7aE2LgNCwFtiPE1ax7NryN/d4480f445267a5faa330d715f412f0be/GettyImages-1322878383.jpg)
Strength Train
5 Reasons Why Core Stability Is Worth Training
![A man stretching his leg outdoors before he works out twice a day.](https://res.cloudinary.com/peloton-cycle/image/fetch/c_fill,dpr_1.0,w_316,h_225,x_613,y_297/f_auto/q_auto/https://images.ctfassets.net/6ilvqec50fal/1CSrYSS3G9HRNur6FCgc2M/c9d1f883a9c0502669d6c23b36a64482/working-out-twice-a-day.jpg)
Health
The Pros and Cons of Working Out Twice a Day—and How to Do It Without Burning Out