APK MOD INFO
Name of Game: Muscle Run
VERSION: 1.2.6

Name of Cheat/Mod/Hack (credits: wendgames):
-INFINITE CASH/POINTS/BONUSES/REWARDS & MORE

Muscle Run MOD APK 1.2.6 (Infinite Cash/Points/Bonuses & More)

Download the CACHE file/OBB file. They should be .zip or .rar files.
Extract the file to your sdcard.
Move the extracted folder to the location: /sdcard/Android/obb