laughter
→ boost
→ immune system
|
109
|
laughter
→ strengthen
→ your immune system
|
75
|
laughter
→ boost
→ your immune system
|
37
|
laughter
→ improve
→ your immune system
|
14
|
laughter
→ help boost
→ immune system
|
9
|
laughter
→ strengthen
→ our immune system
|
9
|
laughter
→ boost
→ our immune system
|
9
|
laughter
→ boost
→ body’s immune system
|
7
|
laughter
→ boost
→ our immune systems
|
4
|
laughter
→ help to boost
→ immune system
|
4
|
laughter
→ bolster
→ immune system
|
4
|
laughter
→ improve
→ our immune system
|
3
|
laughter
→ be good for
→ immune system
|
3
|
laughter
→ improve
→ our immune systems
|
3
|
laughter
→ heighten
→ immune system
|
3
|
laughter
→ boost
→ your immune function
|
3
|
laughter
→ help boost
→ your immune system
|
3
|