Just came across this savings challenge that's been going around and honestly it's kind of genius. So basically you write numbers 1-100 on paper and save double each number in cash - so day one is $2, day two is $4, day three is $6, all the way to $200 on day 100. By the end you've got like $10,100 saved. How to save 10k in 100 days sounds impossible but the way it's structured actually makes sense because you're not committing to huge amounts upfront.

This girl on TikTok named Jenny Joo has been doing it and it's actually pretty motivating to watch. The cool part is it's flexible - if you can't hit a certain day's amount, you just skip to another day. So it's not as rigid as it sounds.

Obviously $10k in 100 days is aggressive if your budget is tight. But there are easier versions - like the envelope challenge that gets you to around $5k, or the 52-week one that's like $1,400. You can honestly customize how to save 10k in 100 days based on what actually works for your situation.

One thing though - using physical cash is kind of a hassle. The whole point of how to save 10k in 100 days could work even better if you just transferred money to a savings account instead. Then you'd actually earn interest on it. That's what I'd probably do because keeping $10k in cash feels risky.

Anyone else trying this or one of the variations? Curious if people actually stick with it or if it's just a vibe check.