Originally Posted by
xenologer
sitting bolt upright on a 'comfort bike' will do very little to improve core strength
additionally this posture will send all shock forces from the road straight up your spine
leaning forward with arms taking up more of your weight is better
+! on core strength.
Add exercises to strengthen your core and your back problems may go away.
__________________
The Lord is merciful and gracious, slow to anger and abounding in steadfast love. - Psalm 103:8
I am a cyclist. I am not the fastest or the fittest. But I will get to where I'm going with a smile on my face.