The ‘worst allergy season ever’ in the US. A ‘pollen bomb’ in the UK. I asked experts how to tell if a runny nose is the result of allergies or a virus

Ah, spring. A time of thawing and rebirth, of blooms bursting forth from frost. Days become longer, warmer and – oh no, what’s this? A tickle in your throat. Pressure building in your sinuses. A runny nose. A sneeze. Another sneeze. Was there ever a time before sneezing?

But is it allergies or a cold? Beautiful as springtime may be, the emerging greenery can also expel waves of allergens. So how can you tell if your runny nose is the result of unruly pollen or a virus? Are you infectious or is your immune system overreacting to an outside stimulus?

When it comes to workouts, how much pain – specifically, how much post-workout soreness – is actually a good thing? The answer: it depends

Humans have long glamorized suffering, hailing it as an essential ingredient of growth. In the ancient Greek tragedy Elektra, Sophocles wrote: “Nothing truly succeeds without pain.” In the 1980s, the actor and aerobics instructor Jane Fonda told people: “No pain, no gain.”

But when it comes to workouts, how much pain – specifically, how much post-workout soreness – is actually a good thing? The answer: it depends.

From therapy to running and conversing with strangers, we asked experts what the basics are of starting anything new

The hardest part of any new habit or activity is starting it. Do you need special equipment? How do you know if you’re doing it right? What are the basics you need to master before you can take your practice to the next level?

In the series How to start, we ask experts to break down how to start, well, anything – including weightlifting, running, dating and talking to strangers.