Any injured person should never attempt physical activities inconsistent with their doctors restrictions. All sorts of issues relating to your physical condition, like whether you suffered any pre-existing condition of relevance, can arise in a deposition.
If you are out of work from a serious injury, there will likely be an inquiry about all of your prior jobs and employment and you must disclose to your lawyer if you were fired for many prior position and why, and you must disclose any and all prior injury related claims that you have ever filed whether you believe they are relevant or not.
We deal with lawyers that subpoena high school transcripts, division of motor vehicle driving records, other background checks etc.