
A 21-day plan · Stress
Switch off in the evening
For evenings when work follows you home. At most three required habits to close the day, park the worries and let your body slow down.
Close your workday
Long-exhale breathing
Worry window
Walk outside after work
Batch your notifications
Run it in the By Day app on iPhone or Android.
For you if
- You leave work, but work doesn't leave you.
- Your evenings go on replaying today or rehearsing tomorrow.
- You check email "just once more" after dinner.
You’ll need
- Paper or a notes app.
- A timer.
How you’ll know
- Your 1-5 'switched off' ratings are higher than in your first days.
- Work thoughts come up less after your switch-off time.
- Your evenings feel like yours again.
What runs when
Days 1–21
Usually 3 required habits a day, never more than three. Day 1 is set-up: choose your switch-off time. Optional rows never count toward your results or a lifetime place.
Checkpoints
- Day1
Set-up: choose your switch-off time. Set a reminder for it.
- Day3
The worry window may feel odd. Keep it short, and at the same time each day.
- Day7
Notice how often worries pop up after your switch-off time now, compared with day 1.
- Day8
Week-one check-in: a short look back, then keep going or stop. Stopping never counts against you.
- Day14
Compare your 1-5 ratings with your first days.
- Day21
Decide what to keep. Closing the workday in writing and the breathing are the two to hold on to.
Why it works
Unfinished tasks keep nagging because your brain is trying not to forget them; writing them down with a time to pick them up lets you let go. Giving worries a set time and place stops them spilling across the whole evening. Slow breathing with a long breath out is one of the quickest ways to help your body calm down.
Short daily breathing practice lowers self-reported stress in trials, with small-to-moderate effects. Setting aside a worry period reduced daily worry in studies of people who worry a lot. Planning where and when you'll pick up unfinished work helps people detach from it in the evening, and batching notifications lowered stress in a field experiment. Most studies are short and many used students or young adults.Sources
Before you start
- This is a wellness program, not therapy.
- If worry feels hard to control on most days, or you've felt low or lost interest in things for 2 weeks or more, talk to a doctor or a mental health professional.
- Feeling exhausted and cynical about your work most of the time is worth raising with a professional too.
- If you have thoughts of harming yourself, contact a crisis line or emergency services now: call or text 988 in the US and Canada, or call Samaritans on 116 123 in the UK and Ireland.
- Keep the breathing gentle: no breath-holding, and stop if you feel light-headed or dizzy.
Access
- Now
- Free, with every feature, during the open beta. No card, no end date yet.
- A lifetime place
- Finish your first full 21-day plan during the beta with at least 80% of its required habits done and, if fewer than 200 people have qualified before you, Explorer is yours for life straight away. Stopping early doesn’t count against you; the first plan you run to its end is the one that counts.
- After the beta
- One active plan, daily habits, mood, recaps and history stay free. Explorer, the paid tier, adds every plan and connected health readings.
- Where
- The By Day app on iPhone and Android, to run it and to look back.
Sources and the strength of each
Balban et al., Cell Reports Medicine (2023). Five minutes a day of breathing with long exhales for a month lifted mood more than mindfulness meditation.
Evidence: small trialFincham et al., Scientific Reports (2023). Across randomised trials, breathwork lowered self-reported stress by a small-to-moderate amount.
Evidence: meta-analysisBorkovec et al., Behaviour Research and Therapy (1983). A daily 30-minute worry period reduced daily worry in people who worry a lot.
Evidence: small trialSmit, Journal of Occupational and Organizational Psychology (2016). Planning where, when and how to pick up unfinished work helped people detach from it in the evening.
Evidence: small trialWendsche & Lohmann-Haislah, Frontiers in Psychology (2017). Detaching from work after hours is linked to less exhaustion and better sleep.
Evidence: meta-analysisFitz et al., Computers in Human Behavior (2019). Getting phone notifications in batches three times a day lowered stress; turning them off completely did not help.
Evidence: small trialBratman et al., PNAS (2015). A walk in nature, unlike a walk in the city, reduced rumination.
Evidence: small trial
By Day is not a medical device and does not diagnose or treat any condition.
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