extract combined exercise module

my/body/exercise/all.py

@@ -0,0 +1,17 @@
+'''
+Combined exercise data
+'''
+from ...core.pandas import DataFrameT, check_dataframe
+
+
+@check_dataframe
+def dataframe() -> DataFrameT:
+    # this should be somehow more flexible...
+    from ...endomondo import dataframe as EDF
+    from ...runnerup  import dataframe as RDF
+
+    import pandas as pd # type: ignore
+    return pd.concat([
+        EDF(),
+        RDF(),
+    ])