"up and at 'em" meaning in English

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        {
          "ref": "1945 November 12, “Sport: Stretch Drive”, in Time, retrieved 2015-05-29:",
          "text": "At 41, Jockey Richards was still up and at 'em last week, and his wrists and knees were still persuasive enough to boot home the winner in Newmarket's Icklingham Stakes.",
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          "ref": "2002 September 15, Simon Schama, “A Whiff of Dread for the Land of Hope”, in New York Times, retrieved 2015-05-29:",
          "text": "[O]nly two alternative responses seem available: irrepressible up-and-at-'em chirpiness or apocalyptic hysteria.",
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          "ref": "2011 September 9, Andrea Sachs, “Bed Check: Mountain dreamin’ in W. Va.”, in Washington Post, retrieved 2015-05-29:",
          "text": "I padded downstairs to find everyone up and at 'em, their day leaps ahead of mine.",
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          "ref": "2013 November 18, Stephen Brenkley, “Peter Siddle hungry to leave some banana skins in England's path”, in Independent, UK, retrieved 2015-05-29:",
          "text": "Siddle is the sort of up-and-at-'em, tearaway fast bowler whom you imagine to train on raw red meat while running over a bed of hot coals.",
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        "Vigorously launched or launching into an activity."
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        "(idiomatic) Vigorously launched or launching into an activity."
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          "word": "onwards and upwards"
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          "ref": "1945 November 12, “Sport: Stretch Drive”, in Time, retrieved 2015-05-29:",
          "text": "At 41, Jockey Richards was still up and at 'em last week, and his wrists and knees were still persuasive enough to boot home the winner in Newmarket's Icklingham Stakes.",
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          "ref": "2002 September 15, Simon Schama, “A Whiff of Dread for the Land of Hope”, in New York Times, retrieved 2015-05-29:",
          "text": "[O]nly two alternative responses seem available: irrepressible up-and-at-'em chirpiness or apocalyptic hysteria.",
          "type": "quote"
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          "ref": "2011 September 9, Andrea Sachs, “Bed Check: Mountain dreamin’ in W. Va.”, in Washington Post, retrieved 2015-05-29:",
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          "ref": "2013 November 18, Stephen Brenkley, “Peter Siddle hungry to leave some banana skins in England's path”, in Independent, UK, retrieved 2015-05-29:",
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        "(idiomatic) Vigorously launched or launching into an activity."
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