Hello winnetkadave,
Thanks for the post! It sounds like you might have a concern about the accuracy of data in the Health app.
To clarify, are you using a paired Apple Watch to track your activity? If so, this resource is your best starting point: Get the most accurate measurements using your Apple Watch
Are you using iCloud to sync Health data? If so, are you using the same Apple ID on your wife's phone?
Your device should be reporting complete workout information rather than an average. If you open the Health app and tap Browse > Activity > Workouts > Show All Data, what do you see for the most recent workouts there?
I hope this helps get you started. Take care.