Psalm 105:1-4 NASB

Oh give thanks to the LORD, call upon His name; make known His deeds among the peoples.  Sing to Him, sing praises to Him; speak of all His wonders.  Glory in His holy name; let the heart of those who seek the LORD be glad.  Seek the LORD and His strength; seek His face continually. 

There are certain exercises that are essential to spiritual life, and the Psalmist knows it and declares it:

• Give thanks to the LORD (This builds faith muscle)
• Call upon His name (This builds prayer muscle)
• Make known His deeds among the peoples (This builds witnessing muscle)
• Sing to Him, speak praises to Him (This builds emotional muscle)
• Speak of all His wonders (This builds appreciation muscle)
• Glory in His holy name (This builds knowledge muscle)
• Seek the Lord and His strength; seek His face continually (This builds every muscle)

But these are more than exercises, as if they are something that demand blood, sweat, and tears. Certainly, the will must engage itself in purpose, but these should flow out of the heart in ready and delightful response to Someone we know, love and worship.  Anyone who has walked with the LORD does not have to be convinced that He is God, that He is great, and that He is good.  If anyone struggles with this, they don't know the LORD.  Demanding?  No!  I've never thought of it that way; just as I've never thought of my ongoing relationship with my wife that way. Just because this "exercise" demands all day every day, some think it's demanding? It's called love my friend. This isn't demanding; it's sheer delight.  Are you there?  Enter into the joy of the LORD!