We are in week 4 of the year 2014. So deposit $4 into your savings account this week, then next week will be week 5, so you'll deposit $5 into your savings account. :)
I'm thinking of catching up from week 1, so i'll deposit $1, $2 and $3, as well as this week's $4 into a savings account. But thinking about it, I can probably deposit more weekly, so i'll definitely do that! If you do the catch up, by the end of 2014, it calculates to $1400 saved in a year. Now obviously one can put more $$$ into their accounts each week, but for some more may not be doable right now!
Good luck if you decide to do this challenge :)