*Concrete: adjective 1. constituting an actual thing or instance; real 2. pertaining to or concerned with realities or actual instances rather than abstractions; particular (opposed to general) 3. representing or applied to an actual substance or thing, as opposed to an abstract quality 4. made of concrete 5. formed by coalescence of separate particles into a mass; united in a coagulated, condensed, or solid mass or state. noun 6. an artificial, stonelike material used for various structural purposes, made by mixing cement and various aggregates, as sand, pebbles, gravel, or shale, with water and allowing the mixture to harden. 7. a concrete idea or term; a word or notion having an actual or existent thing or instance as its referent. (Dictionary.com)
The play on words (in complete) “have a cup of concrete” means to get tougher. In our case we would like to provide the opportunity to the reader to enrich themselves with well researched and useful knowledge.