Sure thing! Here is a concise explanation of General Relativity:

General Relativity postulates the existence of so-called *spacetime* which encapsulates both spacial and temporal dimensions in a singular special 4D coordinate system. 

A straight line path (geodesic) in this *spacetime* object corresponds to the path that an object (with no forces acting upon it) would move along. Energy and mass alter the local geometry of spacetime and therefore change how objects move around them. This explains the observed phenomenon of "gravity".
This can be summarized in simpler terms by the saying: "Energy tells spacetime how to curve, spacetime tells energy how to move."

Please keep in mind that this explanation is lacking in terms of scientific and mathematical precision to make this answer more understandable.
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