heavy going

1. Also, heavy weather.

2. Difficult, as in Tom found calculus heavy going , or It's going to be heavy weather for us from here on . The first expression originally referred to a road or path that was hard to negotiate; the variant alludes to bad weather at sea. [Mid-1800s]

3. make heavy weather of . Make hard work or a fuss over something, especially unnecessarily. For example, They made heavy weather of the differences between their proposals, which actually seemed much alike . This use of weather likens a commotion to a storm. [Mid-1900s]