You wake up tomorrow bestowed with Strength Infinitum. At first, nothing special happens, you remain as yourself with average level of physical strength. As the days go by, you discover that you are slowly growing stronger and more durable with each passing second.
After the first week, you're able to lift metric ton with ease, and with every week metric ton (315 lbs per day) count increases till the end of your life. Just so you won't be absolutely overpowered right from the start.
This superpower happens every day, doesn't require any training nor does it increase your food needs.
Your physical appearance doesn't change, you look like normal human with no freakish amount of muscle mass.
Your durability increases along with physical strength, to the point where you can't hurt yourself with your own blows.
Speed, agility, intelligence and other stats remain the same.
Infinitely increasing physical strength also means harder keeping yourself in check from accidentally killing others.
What will you do with this superpower?