Your 4-week plan
Do not wear the vest two days in a row at the start.
Week 1
20 minutes5 walksVest 2 days
Vest at 4 to 6 lb. Easy pace.
Week 2
25 minutes5 walksVest 2 days
Same vest weight.
Week 3
30 minutes5 to 6 walksVest 2 to 3 days
Add 1 to 2 lb only if the vest feels easy.
Week 4
30 to 35 minutes5 to 6 walksVest 3 days
Keep weight steady. Focus on posture.